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Full vulnerability report · 2026
CVE-2026-119618High confidence

Apache HTTP Server: mod_http2: heap corruption and RCE in assign_headers

Apache Software Foundation · Apache HTTP Server

8.1HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:High, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 0.41% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Apache Software Foundation Apache HTTP Server and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 30 daysRemediation target: Within 180 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2026-119618 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityhttpd:2.4/mod_http2: mod_http2: httpd: Remote code execution in mod_http2
2 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • jbcs-httpd24-mod_http2 as a component of Red Hat JBoss Core Services
  • jbcs-httpd24-mod_http2.src as a component of Red Hat JBoss Core Services
Summary
A flaw was found in the mod_http2 module of the Apache HTTP Server (httpd), the standard web server used across Red Hat Enterprise Linux and other products. HTTP/2 allows a client to send many requests at the same time over a single connection, and the module handles these concurrent requests using multiple threads. Due to a thread-safety flaw, one thread can modify memory that belongs to another thread, corrupting the server's internal memory. A remote attacker who can reach the web server could exploit this flaw to execute arbitrary commands on the server without any authentication, potentially leading to a complete takeover of the affected system, unauthorized access to sensitive data, and service disruption. Only servers that have HTTP/2 enabled are affected; servers configured to serve only HTTP/1.1 are not vulnerable.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

Concurrent Execution using Shared Resource with Improper Synchronization vulnerability in Apache HTTP Server's mod_http2 in assign_headers() can lead to RCE. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.70. Affected releases of mod_h2 from GitHub: from 2.0.8 through 2.0.42.

What

Concurrent Execution using Shared Resource with Improper Synchronization vulnerability in Apache HTTP Server's mod_http2 in assign_headers() can lead to RCE. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.70. Affected releases of mod_h2 from GitHub: from 2.0.8 through 2.0.42.

Why

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Concurrent Execution using Shared Resource with Improper Synchronization vulnerability in Apache HTTP Server's mod_http2 in assign_headers() can lead to RCE. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.70. Affected releases of mod_h2 from GitHub: from 2.0.8 through 2.0.42.

Why

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-362 ↗

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'). The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-362
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-2026-4517Apache HTTP Server: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Apache HTTP Server ausnutzen, um einen Denial of Service Angriff durchzuführen oder beliebigen Programmcode auszuführen.

Official advisory ↗
INCIBE-CERT · Spanish · multiples-vulnerabilidades-en-apache-http-serverMúltiples vulnerabilidades en Apache HTTP Server

Anthropic y los investigadores Anthony Weems y Simon Scannell, de Google Cloud Vulnerability Research, han informado sobre una vulnerabilidad que podría permitir la ejecución remota de código en Apache HTTP Server. La versión 2.4.71 corrige 3 vulnerabilidades, 1 de severidad crítica, 1 alta y 1 baja.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1500Avis du CERT-FR

De multiples vulnérabilités ont été découvertes dans Apache HTTP Server. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service et un problème de sécurité non spécifié par l'éditeur.

Official advisory ↗
CSIRT Italia · Italian · rilevate-vulnerabilita-in-apache-http-server-1Rilevate vulnerabilità in Apache HTTP Server

Aggiornamenti di sicurezza sanano 3 vulnerabilità, di cui una con gravità "critica" e una con gravità "alta", in Apache HTTP Server. Tali vulnerabilità, qualora sfruttate, potrebbero permettere a un attaccante remoto di eseguire codice arbitrario o compromettere la disponibilità del servizio sui sistemi interessati.

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-7073Apache 제품 보안 업데이트 권고

Apache HTTP Server에서 발생하는 Race Condition 취약점(CVE-2026-119618) [1][2]

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0484Kwetsbaarheid verholpen in Apache HTTP Server

A critical thread-safety vulnerability in Apache HTTP Server's mod_http2 module from versions 2.4.55 to 2.4.70 and mod_h2 from 2.0.8 to 2.0.42 allows unauthenticated remote code execution on HTTP/2-enabled servers.

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Fixed
Action
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Workaround
A mitigation or workaround reference is available from the source linked below; validate it against the affected product and version.
04

Evidence and provenance

Published 11 Nov 2026 · Last source change 13 Nov 2026, 14:17 UTC · CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVE recordCVE.org · 5.2
CVSS sourceCISA ADP
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-11-12
European sourceNo official EUVD mapping
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    jbcs-httpd24-mod_http2 as a component of Red Hat JBoss Core Services; jbcs-httpd24-mod_http2.src as a component of Red Hat JBoss Core Services · Fixed: mod_http2-0:2.0.29-2.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.src as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.src as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); and 37 more
    After
    jbcs-httpd24-mod_http2 as a component of Red Hat JBoss Core Services; jbcs-httpd24-mod_http2.src as a component of Red Hat JBoss Core Services · Fixed: mod_http2-0:2.0.29-2.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.src as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.src as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); and 71 more
    Red Hat Product Security ↗
  2. Vendor guidanceAuthoritative vendor guidance changed: added mitigation: wiz.io/cve-2026-119618-rce-apache-http-server-vulnerability; added patch: github.com/20165; 2 further additions.
    Before
    no authoritative guidance recorded
    After
    mitigation: wiz.io/cve-2026-119618-rce-apache-http-server-vulnerability · patch: github.com/20165 · patch: httpd.apache.org/vulnerabilities_24.html · 1 more references
    security@apache.org ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    Apache HTTP Server: 2.4.55 ≤ 2.4.70 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Apache HTTP Server: 2.4.55 ≤ 2.4.70 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
  4. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    security@apache.org ↗
  5. SeveritySeverity changed from Unknown to High.
    Before
    Unknown
    After
    High
    CISA ADP ↗
  6. CVSS scoreCVSS score changed from not recorded to 8.1 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
    Before
    not recorded
    After
    8.1 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
    CISA ADP ↗
  7. Affected versionsThe structured affected or fixed version information changed.
    Before
    httpd.src as a component of Red Hat Hardened Images; jbcs-httpd24-mod_http2 as a component of Red Hat JBoss Core Services; jbcs-httpd24-mod_http2.src as a component of Red Hat JBoss Core Services · Fixed: mod_http2-0:2.0.29-2.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.src as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.src as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); and 37 more
    After
    jbcs-httpd24-mod_http2 as a component of Red Hat JBoss Core Services; jbcs-httpd24-mod_http2.src as a component of Red Hat JBoss Core Services · Fixed: mod_http2-0:2.0.29-2.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.src as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.src as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); and 37 more
    Red Hat Product Security ↗
  8. Affected versionsThe structured affected or fixed version information changed.
    Before
    mod_http2.src as a component of Red Hat Enterprise Linux 10; mod_http2 as a component of Red Hat Enterprise Linux 9; mod_http2.src as a component of Red Hat Enterprise Linux 9; httpd.src as a component of Red Hat Hardened Images; jbcs-httpd24-mod_http2 as a component of Red Hat JBoss Core Services; jbcs-httpd24-mod_http2.src as a component of Red Hat JBoss Core Services · Fixed: mod_http2-0:2.0.26-6.el9_8.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-0:2.0.26-6.el9_8.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-0:2.0.26-6.el9_8.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-0:2.0.26-6.el9_8.3.src as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-0:2.0.26-6.el9_8.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debuginfo-0:2.0.26-6.el9_8.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debuginfo-0:2.0.26-6.el9_8.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debuginfo-0:2.0.26-6.el9_8.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debuginfo-0:2.0.26-6.el9_8.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debugsource-0:2.0.26-6.el9_8.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debugsource-0:2.0.26-6.el9_8.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debugsource-0:2.0.26-6.el9_8.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debugsource-0:2.0.26-6.el9_8.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8)
    After
    httpd.src as a component of Red Hat Hardened Images; jbcs-httpd24-mod_http2 as a component of Red Hat JBoss Core Services; jbcs-httpd24-mod_http2.src as a component of Red Hat JBoss Core Services · Fixed: mod_http2-0:2.0.29-2.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-2.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); mod_http2-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.src as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debuginfo-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-debugsource-0:2.0.29-4.el10_2.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.10.2); mod_http2-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.src as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-0:2.0.29-5.el10_3.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debuginfo-0:2.0.29-5.el10_3.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); mod_http2-debugsource-0:2.0.29-5.el10_3.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); and 37 more
    Red Hat Product Security ↗
  9. Vendor guidanceAuthoritative vendor guidance changed: removed vendor advisory: httpd.apache.org/vulnerabilities_24.html.
    Before
    vendor advisory: httpd.apache.org/vulnerabilities_24.html
    After
    no authoritative guidance recorded
    CNA ↗
  10. Vendor guidanceAuthoritative vendor guidance changed: added vendor advisory: httpd.apache.org/vulnerabilities_24.html; removed patch: access.redhat.com/CVE-2026-119618; removed remediation: access.redhat.com/CVE-2026-119618.
    Before
    patch: access.redhat.com/CVE-2026-119618 · remediation: access.redhat.com/CVE-2026-119618
    After
    vendor advisory: httpd.apache.org/vulnerabilities_24.html
    httpd.apache.org ↗
  11. Affected versionsThe structured affected or fixed version information changed.
    Before
    mod_http2.src as a component of Red Hat Enterprise Linux 10; mod_http2 as a component of Red Hat Enterprise Linux 9; mod_http2.src as a component of Red Hat Enterprise Linux 9; httpd.src as a component of Red Hat Hardened Images; jbcs-httpd24-mod_http2 as a component of Red Hat JBoss Core Services; jbcs-httpd24-mod_http2.src as a component of Red Hat JBoss Core Services · Fixed: mod_http2-0:2.0.26-6.el9_8.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-0:2.0.26-6.el9_8.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-0:2.0.26-6.el9_8.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-0:2.0.26-6.el9_8.3.src as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-0:2.0.26-6.el9_8.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debuginfo-0:2.0.26-6.el9_8.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debuginfo-0:2.0.26-6.el9_8.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debuginfo-0:2.0.26-6.el9_8.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debuginfo-0:2.0.26-6.el9_8.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debugsource-0:2.0.26-6.el9_8.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debugsource-0:2.0.26-6.el9_8.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debugsource-0:2.0.26-6.el9_8.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8); mod_http2-debugsource-0:2.0.26-6.el9_8.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.8)
    After
    Apache HTTP Server: 2.4.55 ≤ 2.4.70 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  12. Remediation statusRemediation status changed from Patch available to Awaiting fix.
    Before
    Patch available
    After
    Awaiting fix
    httpd.apache.org ↗
  13. SeveritySeverity changed from Critical to Unknown.
    Before
    Critical
    After
    Unknown
    CVE.org ↗
  14. CVSS scoreCVSS score changed from 9.8 (CVSS 3.1 · Other authority · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) to not recorded.
    Before
    9.8 (CVSS 3.1 · Other authority · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
    After
    not recorded
    CVE.org ↗
  15. Catalogue recordCVE added to the BlackTree catalogue.
    Authoritative vendor CSAF advisory ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
Vendor CSAF · Red Hat Product Security↗CVE authority or vendor reference↗Mitigation reference↗Patch or update reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-119618 · cve.blacktree.nl