PT-2026-52900 · Unknown · Openproject

CVE-2026-44731

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Published

2026-06-26

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Updated

2026-06-29

CVSS v3.1

4.3

Medium

VectorAV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Name of the Vulnerable Software and Affected Versions OpenProject versions prior to 17.3.2 OpenProject versions prior to 17.4.0
Description The meetings filter feature in the web application allows an attacker to enumerate existing user accounts by probing user IDs and observing differences in server responses. This issue occurs at the '/projects/[projectName]/meetings' endpoint via the invited user id variable within the filters GET parameter, which leaks whether a user ID is valid and discloses the user's full name.
Recommendations Update to version 17.3.2. Update to version 17.4.0.

Exploit

Fix

IDOR

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Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-44731
GHSA-X7J3-CFGF-7MC4

Affected Products

Openproject