CVE-2025-10939: Keycloak allows access to admin path through flaw

October 28, 2025 (updated October 29, 2025)

A flaw was found in Keycloak. The Keycloak guides recommend to not expose /admin path to the outside in case the installation is using a proxy. The issue occurs at least via ha-proxy, as it can be tricked to using relative/non-normalized paths to access the /admin application path relative to /realms which is expected to be exposed.

References

access.redhat.com/security/cve/CVE-2025-10939
bugzilla.redhat.com/show_bug.cgi?id=2398025
github.com/advisories/GHSA-c6cm-5gc7-c3f4
github.com/keycloak/keycloak
nvd.nist.gov/vuln/detail/CVE-2025-10939

Code Behaviors & Features

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