CVE-2026-22602
LOWOpenProject < 16.6.2 - Authenticated Exposure of Sensitive User Information via Sequential User ID Enumeration
Title source: llmDescription
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.
References (4)
Core 4
Core References
Vendor Advisory, Patch x_refsource_confirm
https://github.com/opf/openproject/security/advisories/GHSA-7fvx-9h6h-g82j
Issue Tracking x_refsource_misc
https://github.com/opf/openproject/pull/21281
Patch x_refsource_misc
https://github.com/opf/openproject/commit/fb39a779f521d9b08f1e0c9e8aff2b6d4643ea37
Release Notes x_refsource_misc
https://github.com/opf/openproject/releases/tag/v16.6.2
Scores
CVSS v3
3.5
EPSS
0.0026
EPSS Percentile
16.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-200
Status
published
Products (1)
openproject/openproject
< 16.6.2
Published
Jan 10, 2026
Tracked Since
Feb 18, 2026