3.7
Low
CVE-2026-0976 A flaw was found in Keycloak
Description
A flaw was found in Keycloak. This improper input validation vulnerability occurs because Keycloak accepts RFC-compliant matrix parameters in URL path segments, while common reverse proxy configurations may ignore or mishandle them. A remote attacker can craft requests to mask path segments, potentially bypassing proxy-level path filtering. This could expose administrative or sensitive endpoints that operators believe are not externally reachable.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Build of Keycloak | Versions not published | |
| Red Hat JBoss Enterprise Application Platform 8 | Versions not published | |
| Red Hat JBoss Enterprise Application Platform Expansion Pack | Versions not published | |
| Red Hat build of Keycloak 26.4.9 | Versions not published |
References
- RHSA-2026:2365 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2429869 bugzilla.redhat.com
Timeline
- Published
- Last modified
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