CVE-2025-1391 Keycloak-services: improper authorization in keycloak organization mapper allows unauthorized organization claims
Attackers can gain unauthorized organization privileges by matching domain patterns, leading to incorrect access control decisions in applications relying on Keycloak tokens.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-1391?
CVE-2025-1391 is a medium-severity missing authorization vulnerability in Red Hat Build of Keycloak, published on 17 Feb 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw was found in the Keycloak organization feature, which allows the incorrect assignment of an organization to a user if their username or email matches the organization’s domain pattern. This issue occurs at the mapper level, leading to misrepresentation in tokens. If an application relies on these claims for authorization, it may incorrectly assume a user belongs to an organization they are not a member of, potentially granting unauthorized access or privileges.
Weakness: CWE-284
Which versions are affected by CVE-2025-1391?
4 open source packages ship an affected version, including org.keycloak:keycloak-services.
| Package | Affected | Fixed in |
|---|---|---|
org.keycloak:keycloak-services Maven | All versions | 26.0.10 |
org.keycloak:keycloak-services Maven | All versions | 26.0.10 |
org.keycloak:keycloak-services Maven | From 26.1.0 | 26.1.3 |
org.keycloak:keycloak-services Maven | From 26.1.0 | 26.1.3 |
How do I fix CVE-2025-1391?
Upgrade org.keycloak:keycloak-services to a fixed version for your release line: 26.0.10 or 26.1.3.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-1391 being exploited?
There is no known exploitation of CVE-2025-1391 in the wild and no public exploit code.
Sources
Also known as ECHO-b87a-6495-4598, GHSA-gvgg-2r3r-53x7.