CVE-2025-10939

Description

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.

CVSS v3.1 Score

3.7

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness Type (CWE)

CWE-427 CWE-427

References

Other References

https://access.redhat.com/errata/RHSA-2025:21370 https://access.redhat.com/errata/RHSA-2025:21371 https://access.redhat.com/security/cve/CVE-2025-10939 https://bugzilla.redhat.com/show_bug.cgi?id=2398025 https://github.com/keycloak/keycloak/issues/43763 https://github.com/keycloak/keycloak/pull/43765

Frequently Asked Questions

What is CVE-2025-10939? +

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. It has a CVSS v3.1 base score of 3.7 (LOW).

How severe is CVE-2025-10939? +

CVE-2025-10939 has a CVSS v3.1 score of 3.7 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

How do I check if I'm vulnerable to CVE-2025-10939? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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