CVE-2025-53003 Janssen Config API returns results without scope verification
Attackers can access sensitive identity provider configuration data without proper scope verification, exposing clients and users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-53003?
CVE-2025-53003 is a high-severity missing authorization vulnerability in JanssenProject jans, published on 1 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Janssen Project is an open-source identity and access management (IAM) platform. Prior to version 1.8.0, the Config API returns results without scope verification. This has a large internal surface attack area that exposes all sorts of information from the IDP including clients, users, scripts ..etc. This issue has been patched in version 1.8.0. A workaround for this vulnerability involves users forking and building the config api, patching it in their system following commit 92eea4d.
Which versions are affected by CVE-2025-53003?
2 open source packages ship an affected version, including io.jans:jans-config-api-server.
| Package | Affected | Fixed in |
|---|---|---|
io.jans:jans-config-api-server Maven | All versions | 1.8.0 |
io.jans:jans-config-api-server Maven | All versions | 1.8.0 |
How do I fix CVE-2025-53003?
Upgrade io.jans:jans-config-api-server to 1.8.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-53003 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-53003 exists.
Sources
Also known as GHSA-373j-mhpf-84wg.