CVE-2026-44731

MEDIUM

OpenProject Meetings - User Enumeration via Improper Access Control

Title source: manual
STIX 2.1

Description

OpenProject is open-source, web-based project management software. Prior to 17.3.2 and 17.4.0, the web application's meetings filter feature leaks whether a given user ID corresponds to a valid account and discloses the user's full name, allowing an attacker to enumerate all existing user accounts by probing user IDs and observing differences in the server response. This vulnerability is fixed in 17.3.2 and 17.4.0.

References (1)

Core 1
Core References

Scores

CVSS v3 4.3
EPSS 0.0019
EPSS Percentile 8.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-639
Status published
Products (1)
opf/openproject < 17.3.2
Published Jun 26, 2026
Tracked Since Jun 27, 2026