Vulnerability Description
OpenProject is an open-source, web-based project management software. For OpenProject versions from 11.2.1 to before 16.6.2, when sending a POST request to the /account/change_password endpoint with an arbitrary User ID as the password_change_user_id parameter, the resulting error page would show the username for the requested user. Since this endpoint is intended to be called without being authenticated, this allows to enumerate the user names of all accounts registered in an OpenProject instance. This issue has been patched in version 16.6.2.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openproject | Openproject | >= 11.2.1, < 16.6.2 |
Related Weaknesses (CWE)
References
- https://github.com/opf/openproject/commit/2cff5e98649e32a197a62659a23dd4b864b785Patch
- https://github.com/opf/openproject/pull/3451Issue Tracking
- https://github.com/opf/openproject/releases/tag/v16.6.2Release Notes
- https://github.com/opf/openproject/security/advisories/GHSA-q7qp-p3vw-j2fhPatchVendor Advisory
FAQ
What is CVE-2026-22604?
CVE-2026-22604 is a vulnerability with a CVSS score of 5.3 (MEDIUM). OpenProject is an open-source, web-based project management software. For OpenProject versions from 11.2.1 to before 16.6.2, when sending a POST request to the /account/change_password endpoint with a...
How severe is CVE-2026-22604?
CVE-2026-22604 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-22604?
Check the references section above for vendor advisories and patch information. Affected products include: Openproject Openproject.