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Full vulnerability report · 2025
CVE-2025-43859High confidence

h11 accepts some malformed Chunked-Encoding bodies

python-hyper · h11

Official source article: GitHub GHSA-VQFR-H8MV-GHFJ ↗. Check the applicable product and release in the original source.

9.1CriticalCVSS 3.1
Recommended action
Within 72 hours

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityCriticalOperational priority:Critical, 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 0.58% 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 python-hyper h11 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 3 daysRemediation target: Within 90 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.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

5 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourcepython-h11Vendor fix publishedDebian records a fixed source-package version for this release.0.14.0-1.1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian bookwormbookworm · sourcepython-h11Vendor fix publishedDebian records a fixed source-package version for this release.0.14.0-1.1~deb12u1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian forkyforky · sourcepython-h11Vendor fix publishedDebian records a fixed source-package version for this release.0.14.0-1.1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian sidsid · sourcepython-h11Vendor fix publishedDebian records a fixed source-package version for this release.0.14.0-1.1Debian Security Tracker ↗Source updated 6 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivepython-h11Vendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.0.14.0-1ubuntu0.24.04.1Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Open-source package ranges2 source-attributed ranges

These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.

Ecosystem and packageAffected rangeFirst fixed versionEvidence
PyPIh11ECOSYSTEM: introduced 0; fixed 0.16.00.16.0OSV record ↗aggregator derived · 10 Sep 2026
piph11< 0.16.00.16.0GitHub advisory ↗upstream repository advisory · 24 Apr 2025
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-2025-43859 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityh11: h11 accepts some malformed Chunked-Encoding bodies
15 known affected

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

  • openshift-lightspeed-tech-preview/lightspeed-service-api-rhel9 as a component of OpenShift Lightspeed
  • ansible-automation-platform-24/platform-resource-runner-rhel8 as a component of Red Hat Ansible Automation Platform 2
  • ansible-automation-platform-25/ee-supported-rhel9 as a component of Red Hat Ansible Automation Platform 2
  • ansible-automation-platform-25/platform-resource-runner-rhel9 as a component of Red Hat Ansible Automation Platform 2
  • rhelai1/bootc-amd-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI)
  • rhelai1/bootc-aws-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI)
  • rhelai1/bootc-azure-amd-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI)
  • rhelai1/bootc-azure-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI)
  • rhelai1/bootc-gcp-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI)
  • rhelai1/bootc-ibm-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI)
  • rhelai1/bootc-intel-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI)
  • rhelai1/bootc-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI)
Summary
A flaw was found in the h11. This vulnerability allows request smuggling via improper parsing of chunked-coding message bodies, where h11 fails to validate the required \r\n terminators.
Remediation
Red Hat Ansible Automation Platform
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.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2025-11981

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 72 hours

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.

Patch available
01

What, why and how

h11 is a Python implementation of HTTP/1.1. Prior to version 0.16.0, a leniency in h11's parsing of line terminators in chunked-coding message bodies can lead to request smuggling vulnerabilities under certain conditions. This issue has been patched in version 0.16.0. Since exploitation requires the combination of buggy h11 with a buggy (reverse) proxy, fixing either component is sufficient to mitigate this issue.

What

h11 is a Python implementation of HTTP/1.1. Prior to version 0.16.0, a leniency in h11's parsing of line terminators in chunked-coding message bodies can lead to request smuggling vulnerabilities under certain conditions. This issue has been patched in version 0.16.0. Since exploitation requires the combination of buggy h11 with a buggy (reverse) proxy, fixing either component is sufficient to mitigate this issue.

Why

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

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

h11 is a Python implementation of HTTP/1.1. Prior to version 0.16.0, a leniency in h11's parsing of line terminators in chunked-coding message bodies can lead to request smuggling vulnerabilities under certain conditions. This issue has been patched in version 0.16.0. Since exploitation requires the combination of buggy h11 with a buggy (reverse) proxy, fixing either component is sufficient to mitigate this issue.

Why

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

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 → Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') → 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
Low: no specialised conditions are recorded
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-444 ↗

CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling'). The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

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:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.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.ANoneAvailability impact: No direct loss is represented by this metric.
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-444
A

Official authority intelligence

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

BSI · German · WID-SEC-2025-1022Red Hat OpenStack (python-h11): Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Red Hat OpenStack ausnutzen, um Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-1057Multiples vulnérabilités dans les produits VMware

ord?id=CVE-2025-30165 Référence CVE CVE-2025-30202 https://www.cve.org/CVERecord?id=CVE-2025-30202 Référence CVE CVE-2025-32381 https://www.cve.org/CVERecord?id=CVE-2025-32381 Référence CVE CVE-2025-32414 https://www.cve.org/CVERecord?id=CVE-2025-32414 Référence CVE CVE-2025-32415 https://www.cve.org/CVERecord?id=CVE-2025-32415 Référence CVE CVE-2025-32434 https://www.cve.org/CVERecord?id=CVE-2025-32434 Référence CVE CVE-2025-32444 https://www.cve.org/CVERecord?id=CVE-2025-32444 Référence CVE CVE-2025-3576 https://www.cve.org/CVERecord?id=CVE-2025-3576 Référence CVE CVE-2025-41248 https://www.cve.org/CVERecord?id=CVE-2025-41248 Référence CVE CVE-2025-43859 https://www.cve.org/CVERecord?id=CVE-2025-43859 Référence CVE CVE-2025-4516 https://www.cve.org/CVERecord?id=CVE-2025-4516 Référence CVE CVE-2025-46570 https://www.cve.org/CVERecord?id=CVE-2025-46570 Référence CVE CVE-2025-47277 https://www.cve.org/CVERecord?id=CVE-2025-47277 Référence CVE CVE-2025-48887 https://www.cve.org/CVERecord?id=CVE-2025-48887 Référence CVE CVE-2025-48956 https://www.cve.org/CVERecord?id=CVE-2025-48956 Référence CVE CVE-2025-4947 https://www.cve.org/CVERecord?id=CVE-2025-4947 Référence CVE CVE-2025-49794 https://www.cve.org/CVERecord?id=CVE-2025-49794 Référence CVE CVE-2025-49795 https://www.cve.org/CVERecord?id=CVE-

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0969Multiples vulnérabilités dans les produits VMware

g/CVERecord?id=CVE-2025-41248 Référence CVE CVE-2025-41249 https://www.cve.org/CVERecord?id=CVE-2025-41249 Référence CVE CVE-2025-41254 https://www.cve.org/CVERecord?id=CVE-2025-41254 Référence CVE CVE-2025-4138 https://www.cve.org/CVERecord?id=CVE-2025-4138 Référence CVE CVE-2025-4207 https://www.cve.org/CVERecord?id=CVE-2025-4207 Référence CVE CVE-2025-4287 https://www.cve.org/CVERecord?id=CVE-2025-4287 Référence CVE CVE-2025-4330 https://www.cve.org/CVERecord?id=CVE-2025-4330 Référence CVE CVE-2025-4373 https://www.cve.org/CVERecord?id=CVE-2025-4373 Référence CVE CVE-2025-43857 https://www.cve.org/CVERecord?id=CVE-2025-43857 Référence CVE CVE-2025-43859 https://www.cve.org/CVERecord?id=CVE-2025-43859 Référence CVE CVE-2025-43965 https://www.cve.org/CVERecord?id=CVE-2025-43965 Référence CVE CVE-2025-4435 https://www.cve.org/CVERecord?id=CVE-2025-4435 Référence CVE CVE-2025-4516 https://www.cve.org/CVERecord?id=CVE-2025-4516 Référence CVE CVE-2025-4517 https://www.cve.org/CVERecord?id=CVE-2025-4517 Référence CVE CVE-2025-45582 https://www.cve.org/CVERecord?id=CVE-2025-45582 Référence CVE CVE-2025-4565 https://www.cve.org/CVERecord?id=CVE-2025-4565 Référence CVE CVE-2025-45768 https://www.cve.org/CVERecord?id=CVE-2025-45768 Référence CVE CVE-2025-4598 https://www.cve.org/CVERecord?id=CVE-2025-

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0512Multiples vulnérabilités dans les produits IBM

d?id=CVE-2025-25193 Référence CVE CVE-2025-27152 https://www.cve.org/CVERecord?id=CVE-2025-27152 Référence CVE CVE-2025-27219 https://www.cve.org/CVERecord?id=CVE-2025-27219 Référence CVE CVE-2025-27220 https://www.cve.org/CVERecord?id=CVE-2025-27220 Référence CVE CVE-2025-27363 https://www.cve.org/CVERecord?id=CVE-2025-27363 Référence CVE CVE-2025-27516 https://www.cve.org/CVERecord?id=CVE-2025-27516 Référence CVE CVE-2025-27789 https://www.cve.org/CVERecord?id=CVE-2025-27789 Référence CVE CVE-2025-30065 https://www.cve.org/CVERecord?id=CVE-2025-30065 Référence CVE CVE-2025-30204 https://www.cve.org/CVERecord?id=CVE-2025-30204 Référence CVE CVE-2025-43859 https://www.cve.org/CVERecord?id=CVE-2025-43859 Référence CVE CVE-2025-47935 https://www.cve.org/CVERecord?id=CVE-2025-47935 Référence CVE CVE-2025-47944 https://www.cve.org/CVERecord?id=CVE-2025-47944 Gestion détaillée du document le 13 juin 2025 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr france.fr info.gouv.fr/risques Premier Ministre / Secrétariat Général de la Défense et de la Sécurité Nationale / Agence nationale de la sécurité des systèmes d'information

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
Red Hat Ansible Automation Platform
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 24 Apr 2025 · Last source change 24 Apr 2025, 19:02 UTC · CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

CVE recordCVE.org · 5.1
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2025-11981
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD not scheduled

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
    < 0.16.0 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    < 0.16.0 · Fixed: Red Hat Ansible Automation Platform
    Red Hat Product Security ↗
  2. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    Red Hat Product Security ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    openshift-lightspeed-tech-preview/lightspeed-service-api-rhel9 as a component of OpenShift Lightspeed; ansible-automation-platform-24/platform-resource-runner-rhel8 as a component of Red Hat Ansible Automation Platform 2; ansible-automation-platform-25/ee-supported-rhel8 as a component of Red Hat Ansible Automation Platform 2; ansible-automation-platform-25/ee-supported-rhel9 as a component of Red Hat Ansible Automation Platform 2; ansible-automation-platform-25/platform-resource-runner-rhel9 as a component of Red Hat Ansible Automation Platform 2; rhelai1/bootc-amd-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/bootc-aws-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/bootc-azure-amd-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/bootc-azure-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/bootc-gcp-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/bootc-ibm-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/bootc-intel-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/bootc-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/instructlab-amd-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/instructlab-intel-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/instructlab-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI) · Fixed: ansible-automation-platform-24/lightspeed-rhel8@sha256:18a3be9b0a2cc73aa1c3ff359e4242e076a35106e4a6a30eecb6d806fd255187_ppc64le as a component of Red Hat Ansible Automation Platform 2.4 for RHEL 8; ansible-automation-platform-24/lightspeed-rhel8@sha256:34f2b77b7eee4e3bd75b56aafeb3e89e956e08a824dc508cfbe06234fec29d69_arm64 as a component of Red Hat Ansible Automation Platform 2.4 for RHEL 8; ansible-automation-platform-24/lightspeed-rhel8@sha256:6136b199d078a0195d2f5ad4bcbee89aa790a212da2ac1c46e92ee32ab1cddc7_amd64 as a component of Red Hat Ansible Automation Platform 2.4 for RHEL 8; ansible-automation-platform-24/lightspeed-rhel8@sha256:fc86cb697e9ec1a3f57509fcfb849a630f3c97c2eb1d10ef34f67b0f40c50eaa_s390x as a component of Red Hat Ansible Automation Platform 2.4 for RHEL 8; ansible-automation-platform-25/ee-supported-rhel8@sha256:59658e4b779277d4ca69e90558dbdc1926fbceb46ed3d215bea74642efd7a29b_amd64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/ee-supported-rhel8@sha256:a4115618e5d4ea8ad25ae923236dcf44541c4f9d3f845360bbea2e3a95d7021e_ppc64le as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/ee-supported-rhel8@sha256:ad0cfd4128e1bfc48b071e8cfca3bef8331367bf4542e0fece7f7f734f23a41c_arm64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/ee-supported-rhel8@sha256:b3d2a8a7d3393baee66a3ad88e8731b889bcd0b1fcb360ed1292730fae664cda_s390x as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-chatbot-rhel8@sha256:0c6dfdb351ee11966d3c239b5eef6d576094093f504d44db1012ac7d4fccd1bb_ppc64le as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-chatbot-rhel8@sha256:461a97399f120ddd91aa725094de3b7787d52d2c5226cc7e40a9416c57415d64_amd64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-chatbot-rhel8@sha256:b1c33e18706931beec3545e6b619af7cb9244bf7e71ff0e8ffafbdd60ff222ae_arm64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-chatbot-rhel8@sha256:b991e902f4594987d5b6b64fdf9fc27ed183e6a45f26ef596278d97940e84d8c_s390x as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-rhel8@sha256:027c70368622f36de7d1acb49e7b539b5fd7f83c57466de5ea2756b0fd00ecbc_ppc64le as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-rhel8@sha256:295551809b4551e2b734b27ce9d57437707b7cda7dacb9e4c6d1dfde3fe95dab_amd64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-rhel8@sha256:a31898a99a2f96d96bdc3295500bb32f79ba28bf4d5a2f67b853c9974cdd6dab_arm64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-rhel8@sha256:b0d075def8d6de3aa4341e7bd0112ac6b9aac08ee2bc27c9ab58c90d03a642d7_s390x as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/ee-cloud-services-rhel9@sha256:330ed44b3acc22bc757941a1b6450f39782c52db9a67facf72de455760b29e95_amd64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 9; ansible-automation-platform-25/ee-cloud-services-rhel9@sha256:b097aeb83171196287a8c75d9c481184d9a05c1a7bb1b2fbfeeb36fee9ab6b85_arm64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 9; ansible-automation-platform-25/ee-supported-rhel9@sha256:034ebddf8722a14999ad9b03e63ca43da24bf9554d482cfda2a5e56e9bcfce2a_amd64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 9; ansible-automation-platform-25/ee-supported-rhel9@sha256:3b28607254f76cb18610a485c09ef0119206a175290ea314a6bde8677676efdf_arm64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 9; ansible-automation-platform-25/ee-supported-rhel9@sha256:b3e2b0a7517fe4ed823a7b705aa2f58382e87e6398fc3a59a4bf99d6cde6be43_ppc64le as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 9; ansible-automation-platform-25/ee-supported-rhel9@sha256:b477252a2d77b2c192cd2f977bec917e462b48b5ee016e961c90d2e15ccf3d20_s390x as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 9; python-h11-0:0.12.0-2.1.el9ost.src as a component of Red Hat OpenStack Platform 17.1; python3-h11-0:0.12.0-2.1.el9ost.noarch as a component of Red Hat OpenStack Platform 17.1; python-h11-0:0.12.0-4.el9ost.src as a component of Red Hat OpenStack Services on OpenShift 18.0; python3-h11-0:0.12.0-4.el9ost.noarch as a component of Red Hat OpenStack Services on OpenShift 18.0
    After
    openshift-lightspeed-tech-preview/lightspeed-service-api-rhel9 as a component of OpenShift Lightspeed; ansible-automation-platform-24/platform-resource-runner-rhel8 as a component of Red Hat Ansible Automation Platform 2; ansible-automation-platform-25/ee-supported-rhel9 as a component of Red Hat Ansible Automation Platform 2; ansible-automation-platform-25/platform-resource-runner-rhel9 as a component of Red Hat Ansible Automation Platform 2; rhelai1/bootc-amd-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/bootc-aws-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/bootc-azure-amd-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/bootc-azure-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/bootc-gcp-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/bootc-ibm-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/bootc-intel-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/bootc-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/instructlab-amd-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/instructlab-intel-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI); rhelai1/instructlab-nvidia-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI) · Fixed: ansible-automation-platform-24/lightspeed-rhel8@sha256:18a3be9b0a2cc73aa1c3ff359e4242e076a35106e4a6a30eecb6d806fd255187_ppc64le as a component of Red Hat Ansible Automation Platform 2.4 for RHEL 8; ansible-automation-platform-24/lightspeed-rhel8@sha256:34f2b77b7eee4e3bd75b56aafeb3e89e956e08a824dc508cfbe06234fec29d69_arm64 as a component of Red Hat Ansible Automation Platform 2.4 for RHEL 8; ansible-automation-platform-24/lightspeed-rhel8@sha256:6136b199d078a0195d2f5ad4bcbee89aa790a212da2ac1c46e92ee32ab1cddc7_amd64 as a component of Red Hat Ansible Automation Platform 2.4 for RHEL 8; ansible-automation-platform-24/lightspeed-rhel8@sha256:fc86cb697e9ec1a3f57509fcfb849a630f3c97c2eb1d10ef34f67b0f40c50eaa_s390x as a component of Red Hat Ansible Automation Platform 2.4 for RHEL 8; ansible-automation-platform-25/ee-supported-rhel8@sha256:59658e4b779277d4ca69e90558dbdc1926fbceb46ed3d215bea74642efd7a29b_amd64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/ee-supported-rhel8@sha256:a4115618e5d4ea8ad25ae923236dcf44541c4f9d3f845360bbea2e3a95d7021e_ppc64le as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/ee-supported-rhel8@sha256:ad0cfd4128e1bfc48b071e8cfca3bef8331367bf4542e0fece7f7f734f23a41c_arm64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/ee-supported-rhel8@sha256:b3d2a8a7d3393baee66a3ad88e8731b889bcd0b1fcb360ed1292730fae664cda_s390x as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-chatbot-rhel8@sha256:0c6dfdb351ee11966d3c239b5eef6d576094093f504d44db1012ac7d4fccd1bb_ppc64le as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-chatbot-rhel8@sha256:461a97399f120ddd91aa725094de3b7787d52d2c5226cc7e40a9416c57415d64_amd64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-chatbot-rhel8@sha256:b1c33e18706931beec3545e6b619af7cb9244bf7e71ff0e8ffafbdd60ff222ae_arm64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-chatbot-rhel8@sha256:b991e902f4594987d5b6b64fdf9fc27ed183e6a45f26ef596278d97940e84d8c_s390x as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-rhel8@sha256:027c70368622f36de7d1acb49e7b539b5fd7f83c57466de5ea2756b0fd00ecbc_ppc64le as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-rhel8@sha256:295551809b4551e2b734b27ce9d57437707b7cda7dacb9e4c6d1dfde3fe95dab_amd64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-rhel8@sha256:a31898a99a2f96d96bdc3295500bb32f79ba28bf4d5a2f67b853c9974cdd6dab_arm64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/lightspeed-rhel8@sha256:b0d075def8d6de3aa4341e7bd0112ac6b9aac08ee2bc27c9ab58c90d03a642d7_s390x as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 8; ansible-automation-platform-25/ee-cloud-services-rhel9@sha256:330ed44b3acc22bc757941a1b6450f39782c52db9a67facf72de455760b29e95_amd64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 9; ansible-automation-platform-25/ee-cloud-services-rhel9@sha256:b097aeb83171196287a8c75d9c481184d9a05c1a7bb1b2fbfeeb36fee9ab6b85_arm64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 9; ansible-automation-platform-25/ee-supported-rhel9@sha256:034ebddf8722a14999ad9b03e63ca43da24bf9554d482cfda2a5e56e9bcfce2a_amd64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 9; ansible-automation-platform-25/ee-supported-rhel9@sha256:3b28607254f76cb18610a485c09ef0119206a175290ea314a6bde8677676efdf_arm64 as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 9; ansible-automation-platform-25/ee-supported-rhel9@sha256:b3e2b0a7517fe4ed823a7b705aa2f58382e87e6398fc3a59a4bf99d6cde6be43_ppc64le as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 9; ansible-automation-platform-25/ee-supported-rhel9@sha256:b477252a2d77b2c192cd2f977bec917e462b48b5ee016e961c90d2e15ccf3d20_s390x as a component of Red Hat Ansible Automation Platform 2.5 for RHEL 9; python-h11-0:0.12.0-2.1.el9ost.src as a component of Red Hat OpenStack Platform 17.1; python3-h11-0:0.12.0-2.1.el9ost.noarch as a component of Red Hat OpenStack Platform 17.1; python-h11-0:0.12.0-4.el9ost.src as a component of Red Hat OpenStack Services on OpenShift 18.0; python3-h11-0:0.12.0-4.el9ost.noarch as a component of Red Hat OpenStack Services on OpenShift 18.0
    Red Hat Product Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2025-11981↗Red Hat Product Security security advisory↗CVE authority or vendor reference · GitHub GHSA-VQFR-H8MV-GHFJ↗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-2025-43859 · cve.blacktree.nl