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CVE-2026-12388VulnerabilityPublished Updated

Bundesamt für Sicherheit in der Informationstechnik Open Source · Keycloak: Mehrere Schwachstellen

Affects Bundesamt für Sicherheit in der Informationstechnik Open SourceSource GCVE Database

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Authoritative record:CVE-2026-12388· Medium 6.5

Not known to be exploited · CVSS 6.5 Medium.

Data as of 9 Nov 2026, 14:48 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.16.5
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Jun 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 9 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 26.6.8rhbk/keycloak-rhel9Affected–Fixed in–

AI-suggested

A fixed version 26.8.0 of Keycloak is available that addresses these vulnerabilities. Red Hat has released updated packages for their build of Keycloak 26.4.14 containing these fixes. Users should back up their existing installations and apply the updates as provided by their vendor or upstream project. No additional mitigations are specified beyond applying the official fixes.

Description

Multiple security vulnerabilities have been identified in Keycloak, an open-source identity and access management solution enabling single sign-on for modern applications and services. These vulnerabilities include authorization bypasses, privilege escalations, denial of service, arbitrary code execution, and bypasses of brute-force protections. The issues affect versions prior to 26.8.0 and have been addressed in the fixed release 26.8.0. Red Hat has released updated packages for their build of Keycloak 26.4.14 with security fixes aligning with the upstream patches.

References

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