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Full vulnerability report · 2026
CVE-2026-16192High confidence

IBM WebSphere Application Server Liberty is affected by a denial of service

IBM · WebSphere Application Server - Liberty

7.1HighCVSS 3.1
Recommended action
Within 7 days

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

Patch available
Optional official sources

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

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

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-2026-50015

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 7 days

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

Patch available
01

What, why and how

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is affected by a denial of service vulnerability when the restConnector-2.0 feature is enabled.

What

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is affected by a denial of service vulnerability when the restConnector-2.0 feature is enabled.

Why

The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

What

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is affected by a denial of service vulnerability when the restConnector-2.0 feature is enabled.

Why

The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

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 → Uncontrolled Recursion → disrupt the affected service
Attack surface
Network
Privileges required
Low: a basic authenticated account is required
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-674 ↗

CWE-674: Uncontrolled Recursion. The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

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:L/UI:N/S:U/C:L/I:N/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.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CLowConfidentiality impact: A successful attack can cause a limited loss.INoneIntegrity impact: No direct loss is represented by this metric.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.
NetworkDenial of serviceCWE-674
A

Official authority intelligence

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

BSI · German · WID-SEC-2026-2564IBM WebSphere Application Server und Application Server Liberty: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in IBM WebSphere Application Server Liberty und IBM WebSphere Application Server ausnutzen, um beliebigen Programmcode auszuführen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen Cross-Site Scripting Angriff durchzuführen, und um Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1165Multiples vulnérabilités dans les produits IBM

ord?id=CVE-2026-14980 Référence CVE CVE-2026-14981 https://www.cve.org/CVERecord?id=CVE-2026-14981 Référence CVE CVE-2026-15055 https://www.cve.org/CVERecord?id=CVE-2026-15055 Référence CVE CVE-2026-15057 https://www.cve.org/CVERecord?id=CVE-2026-15057 Référence CVE CVE-2026-15064 https://www.cve.org/CVERecord?id=CVE-2026-15064 Référence CVE CVE-2026-15280 https://www.cve.org/CVERecord?id=CVE-2026-15280 Référence CVE CVE-2026-15325 https://www.cve.org/CVERecord?id=CVE-2026-15325 Référence CVE CVE-2026-15328 https://www.cve.org/CVERecord?id=CVE-2026-15328 Référence CVE CVE-2026-1561 https://www.cve.org/CVERecord?id=CVE-2026-1561 Référence CVE CVE-2026-16192 https://www.cve.org/CVERecord?id=CVE-2026-16192 Référence CVE CVE-2026-16221 https://www.cve.org/CVERecord?id=CVE-2026-16221 Référence CVE CVE-2026-16243 https://www.cve.org/CVERecord?id=CVE-2026-16243 Référence CVE CVE-2026-16439 https://www.cve.org/CVERecord?id=CVE-2026-16439 Référence CVE CVE-2026-16440 https://www.cve.org/CVERecord?id=CVE-2026-16440 Référence CVE CVE-2026-16441 https://www.cve.org/CVERecord?id=CVE-2026-16441 Référence CVE CVE-2026-16480 https://www.cve.org/CVERecord?id=CVE-2026-16480 Référence CVE CVE-2026-1718 https://www.cve.org/CVERecord?id=CVE-2026-1718 Référence CVE CVE-2026-18096 https://www.cve.org/CVERecord?id=CV

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1094Multiples vulnérabilités dans les produits IBM

d?id=CVE-2026-15043 Référence CVE CVE-2026-15057 https://www.cve.org/CVERecord?id=CVE-2026-15057 Référence CVE CVE-2026-15064 https://www.cve.org/CVERecord?id=CVE-2026-15064 Référence CVE CVE-2026-15280 https://www.cve.org/CVERecord?id=CVE-2026-15280 Référence CVE CVE-2026-15308 https://www.cve.org/CVERecord?id=CVE-2026-15308 Référence CVE CVE-2026-15325 https://www.cve.org/CVERecord?id=CVE-2026-15325 Référence CVE CVE-2026-15328 https://www.cve.org/CVERecord?id=CVE-2026-15328 Référence CVE CVE-2026-15392 https://www.cve.org/CVERecord?id=CVE-2026-15392 Référence CVE CVE-2026-16184 https://www.cve.org/CVERecord?id=CVE-2026-16184 Référence CVE CVE-2026-16192 https://www.cve.org/CVERecord?id=CVE-2026-16192 Référence CVE CVE-2026-16221 https://www.cve.org/CVERecord?id=CVE-2026-16221 Référence CVE CVE-2026-16243 https://www.cve.org/CVERecord?id=CVE-2026-16243 Référence CVE CVE-2026-16439 https://www.cve.org/CVERecord?id=CVE-2026-16439 Référence CVE CVE-2026-16440 https://www.cve.org/CVERecord?id=CVE-2026-16440 Référence CVE CVE-2026-16441 https://www.cve.org/CVERecord?id=CVE-2026-16441 Référence CVE CVE-2026-18446 https://www.cve.org/CVERecord?id=CVE-2026-18446 Référence CVE CVE-2026-18499 https://www.cve.org/CVERecord?id=CVE-2026-18499 Référence CVE CVE-2026-22007 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0986Multiples vulnérabilités dans les produits IBM

d?id=CVE-2026-14976 Référence CVE CVE-2026-14980 https://www.cve.org/CVERecord?id=CVE-2026-14980 Référence CVE CVE-2026-14981 https://www.cve.org/CVERecord?id=CVE-2026-14981 Référence CVE CVE-2026-15057 https://www.cve.org/CVERecord?id=CVE-2026-15057 Référence CVE CVE-2026-15064 https://www.cve.org/CVERecord?id=CVE-2026-15064 Référence CVE CVE-2026-15280 https://www.cve.org/CVERecord?id=CVE-2026-15280 Référence CVE CVE-2026-15325 https://www.cve.org/CVERecord?id=CVE-2026-15325 Référence CVE CVE-2026-15328 https://www.cve.org/CVERecord?id=CVE-2026-15328 Référence CVE CVE-2026-16184 https://www.cve.org/CVERecord?id=CVE-2026-16184 Référence CVE CVE-2026-16192 https://www.cve.org/CVERecord?id=CVE-2026-16192 Référence CVE CVE-2026-16243 https://www.cve.org/CVERecord?id=CVE-2026-16243 Référence CVE CVE-2026-16439 https://www.cve.org/CVERecord?id=CVE-2026-16439 Référence CVE CVE-2026-16441 https://www.cve.org/CVERecord?id=CVE-2026-16441 Référence CVE CVE-2026-1718 https://www.cve.org/CVERecord?id=CVE-2026-1718 Référence CVE CVE-2026-22007 https://www.cve.org/CVERecord?id=CVE-2026-22007 Référence CVE CVE-2026-22013 https://www.cve.org/CVERecord?id=CVE-2026-22013 Référence CVE CVE-2026-22021 https://www.cve.org/CVERecord?id=CVE-2026-22021 Référence CVE CVE-2026-2291 https://www.cve.org/CVERecord?id=CVE

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0958Multiples vulnérabilités dans les produits IBM

ord?id=CVE-2026-14976 Référence CVE CVE-2026-14980 https://www.cve.org/CVERecord?id=CVE-2026-14980 Référence CVE CVE-2026-14981 https://www.cve.org/CVERecord?id=CVE-2026-14981 Référence CVE CVE-2026-15064 https://www.cve.org/CVERecord?id=CVE-2026-15064 Référence CVE CVE-2026-15280 https://www.cve.org/CVERecord?id=CVE-2026-15280 Référence CVE CVE-2026-15325 https://www.cve.org/CVERecord?id=CVE-2026-15325 Référence CVE CVE-2026-15328 https://www.cve.org/CVERecord?id=CVE-2026-15328 Référence CVE CVE-2026-1605 https://www.cve.org/CVERecord?id=CVE-2026-1605 Référence CVE CVE-2026-16184 https://www.cve.org/CVERecord?id=CVE-2026-16184 Référence CVE CVE-2026-16192 https://www.cve.org/CVERecord?id=CVE-2026-16192 Référence CVE CVE-2026-2004 https://www.cve.org/CVERecord?id=CVE-2026-2004 Référence CVE CVE-2026-2005 https://www.cve.org/CVERecord?id=CVE-2026-2005 Référence CVE CVE-2026-2006 https://www.cve.org/CVERecord?id=CVE-2026-2006 Référence CVE CVE-2026-22007 https://www.cve.org/CVERecord?id=CVE-2026-22007 Référence CVE CVE-2026-22013 https://www.cve.org/CVERecord?id=CVE-2026-22013 Référence CVE CVE-2026-22016 https://www.cve.org/CVERecord?id=CVE-2026-22016 Référence CVE CVE-2026-22018 https://www.cve.org/CVERecord?id=CVE-2026-22018 Référence CVE CVE-2026-22021 https://www.cve.org/CVERecord?id=CVE-20

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-026623IBMのIBM WebSphere Application Serverにおける再帰制御に関する脆弱性

IBM WebSphere Application Server - Liberty 17.0.0.3 から 26.0.0.8 までのバージョンは、restConnector-2.0 機能が有効になっている場合にサービス拒否の脆弱性の影響を受ける可能性があります。

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
WebSphere Application Server - Liberty: 17.0.0.3 ≤ 26.0.0.8
Fixed
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
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 28 Jul 2026 · Last source change 29 Jul 2026, 12:40 UTC · CWE-674 · Uncontrolled Recursion

CVE recordCVE.org · 5.2
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-2026-50015
Product sourceCNA
Remediation sourceCVE/CNA references
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 ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-50015↗CVE authority or vendor 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-2026-16192 · cve.blacktree.nl