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CVE-2026-22604

MEDIUM

5.3

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.

CVE Details

CVSS v3.1 Score5.3

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/10/2026

Last Modified1/14/2026

Sourcenvd

Honeypot Sightings0

Affected Products

openproject:openproject

Weaknesses (CWE)

CWE-200

References

https://github.com/opf/openproject/commit/2cff5e98649e32a197a62659a23dd4b864b7855b(security-advisories@github.com)

https://github.com/opf/openproject/pull/3451(security-advisories@github.com)

https://github.com/opf/openproject/releases/tag/v16.6.2(security-advisories@github.com)

https://github.com/opf/openproject/security/advisories/GHSA-q7qp-p3vw-j2fh(security-advisories@github.com)

IOC Correlations

No correlations recorded

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