CVE-2026-0976
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Org.keycloak/keycloak-quarkus-server: keycloak: proxy bypass due to improper handling of matrix parameters in url paths
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Red Hat build of Keycloak 26.4.9
- Vendor
- Red Hat
- Product
- Red Hat build of Keycloak 26.4.9
- Platforms
- Unknown
- Default status
unaffected- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat Build of Keycloak
- Vendor
- Red Hat
- Product
- Red Hat Build of Keycloak
- Platforms
- Unknown
- Default status
affected- Package
- keycloak-quarkus-server
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat JBoss Enterprise Application Platform 8
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 8
- Platforms
- Unknown
- Default status
affected- Package
- keycloak-quarkus-server
- Package collection
- https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
No explicit version tuples; consult this entry's default status.
Red Hat JBoss Enterprise Application Platform 8
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 8
- Platforms
- Unknown
- Default status
affected- Package
- keycloak-quarkus-server-app
- Package collection
- https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
No explicit version tuples; consult this entry's default status.
Red Hat JBoss Enterprise Application Platform 8
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 8
- Platforms
- Unknown
- Default status
affected- Package
- keycloak-quarkus-server-deployment
- Package collection
- https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
No explicit version tuples; consult this entry's default status.
Red Hat JBoss Enterprise Application Platform Expansion Pack
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Platforms
- Unknown
- Default status
affected- Package
- keycloak-quarkus-server
- Package collection
- https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
No explicit version tuples; consult this entry's default status.
Red Hat JBoss Enterprise Application Platform Expansion Pack
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Platforms
- Unknown
- Default status
affected- Package
- keycloak-quarkus-server-app
- Package collection
- https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
No explicit version tuples; consult this entry's default status.
Red Hat JBoss Enterprise Application Platform Expansion Pack
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Platforms
- Unknown
- Default status
affected- Package
- keycloak-quarkus-server-deployment
- Package collection
- https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
No explicit version tuples; consult this entry's default status.