Red Hat Security Advisory: Red Hat build of Keycloak 26.6.9 Security Update
Affects Red HatSource GCVE Database
Not known to be exploited · CVSS 9.1 Critical.
Data as of 7 Nov 2026, 17:35 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 9.1 |
|---|
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 5 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat build of Keycloak 26.6rhbk/keycloak-operator-bundle | Affected– | Fixed in– |
| Red Hat build of Keycloak 26.6rhbk/keycloak-rhel9 | Affected– | Fixed in– |
| Red Hat build of Keycloak 26.6rhbk/keycloak-rhel9-operator | Affected– | Fixed in– |
| Red Hat build of Keycloak 26.6.9keycloak-services | Affected– | Fixed in– |
| Red Hat build of Keycloak 26.6.9rhbk/keycloak-rhel9 | Affected– | Fixed in– |
| Red Hat Single Sign-On 7keycloak-services | Affected– | 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.