CVE-2026-47193 OpenProject: Journal diff endpoint bypasses object, journal, and field visibility checks
Attackers can access hidden historical field values via the journal diff endpoint due to missing visibility checks in OpenProject.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-47193?
CVE-2026-47193 is a high-severity missing authorization vulnerability in opf openproject, published on 26 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, the journal diff endpoint discloses hidden historical field values without enforcing object and field visibility. This vulnerability is fixed in 17.3.3 and 17.4.1.
Which versions are affected by CVE-2026-47193?
How do I fix CVE-2026-47193?
No fix has been published for CVE-2026-47193 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-47193 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-47193 exists.
Sources
Also known as GHSA-f2rx-x2qj-2hgj.