Theme Resource Flaw in Keycloak Identity Management Solution
CVE-2026-110932

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-2026-110932?

A vulnerability exists in the theme resource endpoint of Keycloak, an open-source identity and access management tool. This flaw arises when the server does not properly validate theme names prior to utilizing them as keys for a disk-based gzip cache. As a consequence, an unauthenticated attacker can exploit this issue by sending a multitude of requests with unique, crafted theme names. This exploitation can ultimately result in persistent disk space exhaustion, which remains even after server restarts, leading to service disruptions and diminished availability.

References

https://access.redhat.com/security/cve/CVE-2026-110932
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2553049
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 Adel Assakaf (Oteria) for reporting this issue.
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