Keycloak Identity and Access Management Tool Vulnerability
CVE-2026-110931

7.5HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Build Of Keycloak
Red Hat Single Sign-on 7
Vendor
CVE Published:
5 November 2026

What is CVE-2026-110931?

A vulnerability in the SAML 1.1 assertion parser of Keycloak can lead to an infinite loop during the handling of AuthorityBinding elements in authentication statements. This issue arises from an incomplete resolution of a prior vulnerability, causing the parser to consume excessive memory. As a result, the Keycloak service can crash, rendering it unavailable and potentially affecting user access and authentication processes.

References

https://access.redhat.com/security/cve/CVE-2026-110931
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2553047
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Animesh Roy for reporting this issue.
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