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Back to active CVEs
High · CVSS 7.5CVE-2026-82965

Keycloak-services: keycloak-services: unauthenticated denial of service via saml soap endpoint unbounded xml parsingCVE-2026-82965

Answer in brief

CVE-2026-82965 records a High severity (CVSS 7.5) vulnerability in Keycloak-services: keycloak-services: unauthenticated denial of service via saml soap endpoint unbounded xml parsing. The current sources do not mark it as known exploited. The current feed maps Red Hat/keycloak/rhbk-openshift-rhel9 (generic), Red Hat/keycloak-services (generic), Red Hat/rhbk/keycloak-rhel9 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 5, 2026Updated Nov 5, 2026Source checked Nov 5, 2026First seen by HOL Nov 5, 2026Material review Nov 5, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.5
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/keycloak/rhbk-openshift-rhel9 (generic), Red Hat/keycloak-services (generic), Red Hat/rhbk/keycloak-rhel9 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/keycloak/rhbk-openshift-rhel9generic*Not reported
Red Hat/keycloak-servicesgeneric*Not reported
Red Hat/rhbk/keycloak-rhel9generic*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/keycloak/rhbk-openshift-rhel9, Red Hat/keycloak-services, Red Hat/rhbk/keycloak-rhel9.
  2. 2Review the reported fix. Source-reported workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Evidence timeline and material changes

  1. Published upstream

    Nov 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 5, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
Upstream source description

A flaw was found in the SAML implementation of Keycloak, an open-source identity and access management solution. The SAML Artifact Resolution and ECP SOAP endpoints do not properly limit the size or complexity of incoming XML requests. An unauthenticated remote attacker can exploit this by sending specially crafted, large XML messages that cause the server to consume excessive memory. This leads to the application running out of memory and crashing, resulting in a denial of service for all users.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Keycloak-services: keycloak-services: account takeover via authentication race using reset-credentials pathSame red hat/keycloak-services package
  • Keycloak-services: keycloak-services: unauthenticated cpu denial of service via saml xml datetime and duration parsingSame red hat/keycloak-services package
  • Keycloak-services: keycloak-services: unauthenticated cpu exhaustion via saml 1.1 keyinfo infinite loopSame red hat/keycloak-services package
  • Keycloak-services: keycloak-services: unauthenticated jvm termination via saml 1.1 authoritybinding parsing loopSame red hat/keycloak-services package
  • Keycloak-services: keycloak-services: unauthenticated persistent disk exhaustion via theme gzip cacheSame red hat/keycloak-services package
  • Keycloak-services: keycloak-services: account takeover via stale sso_auth note in organization identity-first loginSame red hat/keycloak-services package

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-400
Source
CVE List V5
Source checked
Nov 5, 2026
References
2 linked sources
Open source record