CVE-2026-44731 Information disclosure in openproject
Attackers can enumerate valid user accounts and retrieve full names via the meetings filter feature in OpenProject.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-44731?
CVE-2026-44731 is a medium-severity vulnerability in opf openproject, published on 26 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-639
Which versions are affected by CVE-2026-44731?
How do I fix CVE-2026-44731?
No fix has been published for CVE-2026-44731 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-44731 being exploited?
There is no known exploitation of CVE-2026-44731 in the wild and no public exploit code.
Sources
Also known as GHSA-x7j3-cfgf-7mc4.