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CVE-2026-8763VulnerabilityPublished

Red Hat Security Advisory: Red Hat build of Keycloak 26.6.8 Images Security Update

Affects Red HatSource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-8763· Critical 9.3

Not known to be exploited · CVSS 9.3 Critical · fixed in Red Hat package updates : patch Red Hat bcprov as a priority.

Data as of 6 Nov 2026, 23:24 UTC

CVSS 4.0 base score
9.3Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 37% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.85, 2.73.12, 2.1.3 +2
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/U:Amber

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Aug 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 6 Nov 2026.

What to do

Upgrade BC-JAVA and Legion of the Bouncy Castle Inc./bcprov to 1.85; BC-LTS-JAVA and Legion of the Bouncy Castle Inc./bcprov-lts8on to 2.73.12; BC-FJA and Legion of the Bouncy Castle Inc./bc-fips to 2.1.3, 2.0.2 or 1.0.2.7.

Affected software

ProductAffectedFixed in
Legion of the Bouncy Castle Inc.BC-JAVAAffected
  • <1.85
Fixed in
  • 1.85
Legion of the Bouncy Castle Inc.BC-LTS-JAVAAffected
  • >=2.73.0 <2.73.12
Fixed in
  • 2.73.12
Legion of the Bouncy Castle Inc.BC-FJAAffected
  • >=2.1.0 <2.1.3
Fixed in
  • 2.1.3
Legion of the Bouncy Castle Inc.BC-FJAAffected
  • >=2.0.0 <2.0.2
Fixed in
  • 2.0.2
Legion of the Bouncy Castle Inc.BC-FJAAffected
  • >=1.0.0 <1.0.2.7
Fixed in
  • 1.0.2.7
MavenLegion of the Bouncy Castle Inc./bcprovpkg:maven/Legion of the Bouncy Castle Inc./bcprovOther threatsAffected
  • <1.85
Fixed in
  • 1.85

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released updated Keycloak 26.6.8 images that address these vulnerabilities. Users should deploy the updated images provided by Red Hat to remediate these security issues. Since this is a container image update for on-premise or private cloud deployments, administrators must replace existing Keycloak images with the patched versions as per Red Hat's advisory RHSA-2026:95762. No additional mitigations or workarounds are indicated in the advisory.

Description

Red Hat has released security updates for the Red Hat build of Keycloak 26.6.8 images used in OpenShift Container Platform. These updates address multiple vulnerabilities including account takeover, privilege escalation, denial of service, path traversal, injection flaws, and authentication bypasses. The fixes cover a wide range of security issues affecting authentication, authorization, token handling, cryptographic verification, and denial of service vectors. The advisory aligns the containerized Keycloak images with the standalone product release and is intended for on-premise or private cloud deployments.

References

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