OpenProject is an open-source, web-based project management software. Prior to version 16.6.2, a low‑privileged logged-in user can view the full names of other users. Since user IDs are assigned sequentially and predictably (e.g., 1 to 1000), an attacker can extract a complete list of all users’ full names by iterating through these URLs. The same behavior can also be reproduced via the OpenProject API, allowing automated retrieval of full names through the API as well. This issue has been patched in version 16.6.2. Those who are unable to upgrade may apply the patch manually.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 14 Jan 2026 22:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:openproject:openproject:*:*:*:*:*:*:*:*

Tue, 13 Jan 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 12 Jan 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Openproject
Openproject openproject
Vendors & Products Openproject
Openproject openproject

Sat, 10 Jan 2026 01:45:00 +0000

Type Values Removed Values Added
Description OpenProject is an open-source, web-based project management software. Prior to version 16.6.2, a low‑privileged logged-in user can view the full names of other users. Since user IDs are assigned sequentially and predictably (e.g., 1 to 1000), an attacker can extract a complete list of all users’ full names by iterating through these URLs. The same behavior can also be reproduced via the OpenProject API, allowing automated retrieval of full names through the API as well. This issue has been patched in version 16.6.2. Those who are unable to upgrade may apply the patch manually.
Title OpenProject is Vulnerable to User Enumeration via User ID
Weaknesses CWE-200
References
Metrics cvssV3_1

{'score': 3.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-01-13T20:07:25.275Z

Reserved: 2026-01-07T21:50:39.533Z

Link: CVE-2026-22602

cve-icon Vulnrichment

Updated: 2026-01-13T20:07:22.747Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-10T02:15:49.057

Modified: 2026-01-14T22:26:18.717

Link: CVE-2026-22602

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-01-12T14:36:47Z

Weaknesses