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CVE-2026-117691VulnerabilityPublished

Red Hat Security Advisory: Red Hat build of Keycloak 26.6.9 Security Update

Affects Red HatSource GCVE Database

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Authoritative record:CVE-2026-117691· Critical 9.1

Not known to be exploited · CVSS 9.1 Critical.

Data as of 7 Nov 2026, 17:35 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.19.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat build of Keycloak 26.6rhbk/keycloak-operator-bundleAffected–Fixed in–
Red Hat build of Keycloak 26.6rhbk/keycloak-rhel9Affected–Fixed in–
Red Hat build of Keycloak 26.6rhbk/keycloak-rhel9-operatorAffected–Fixed in–
Red Hat build of Keycloak 26.6.9keycloak-servicesAffected–Fixed in–
Red Hat build of Keycloak 26.6.9rhbk/keycloak-rhel9Affected–Fixed in–
Red Hat Single Sign-On 7keycloak-servicesAffected–Fixed in–

AI-suggested

Red Hat has released an updated package for the Red Hat build of Keycloak 26.6.9 that addresses this vulnerability. Users should back up their existing installations, including applications, configurations, and databases, before applying the update. Applying the official update from Red Hat is the recommended mitigation.

Description

A security vulnerability (CVE-2026-117691) affects the Red Hat build of Keycloak 26.6.9, allowing a bypass of SAML redirect binding signature verification via percent-encoded parameter names. This flaw impacts the authentication and single sign-on capabilities provided by Keycloak. Red Hat has issued a security advisory for this issue and recommends updating to the fixed version. No explicit affected versions are stated in the advisory.

References

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