CVE-2026-94394 Missing authorization in MISP
Authenticated users can bypass sharing group restrictions to view sensitive attributes and objects within accessible MISP events.
- 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-2026-94394?
CVE-2026-94394 is a medium-severity missing authorization vulnerability in MISP, published on 21 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
When a regular user adds a reference between objects or attributes, MISP checks whether the user can access the overall event, but it does not always check whether the individual pieces of data are also allowed for that user.
Because of this, someone who can view an event could potentially access attributes or objects inside that event that were meant to be restricted to a specific sharing group or distribution level.
The vulnerability affects authenticated users who are not site administrators and who already have access to an event containing more restricted data.
The main impact is that users may be able to view sensitive attribute values, object details, or related object data that they should not normally be allowed to see.
Weakness: CWE-862
Which versions are affected by CVE-2026-94394?
How do I fix CVE-2026-94394?
No fix has been published for CVE-2026-94394 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-2026-94394 being exploited?
There is no known exploitation of CVE-2026-94394 in the wild and no public exploit code.
Sources
Also known as GHSA-cj24-5f9w-vhx6.