CVE-2026-61474 MISP: Improper sharing group authorization check when adding attributes
Authenticated users can bypass sharing group authorization checks when adding attributes, potentially exposing restricted sharing group relationships.
- 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-2026-61474?
CVE-2026-61474 is a medium-severity missing authorization vulnerability in misp, published on 9 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An improper authorization check in MISP’s attribute creation endpoint allowed an authenticated user with permission to add attributes to submit a sharing_group_id without triggering the corresponding sharing group authorization check, as long as the attribute distribution value was not explicitly set to 4 — “sharing group”.
As a result, a user could reference or associate an attribute with a sharing group they were not authorized to use. This could lead to an access-control bypass affecting the integrity of attribute sharing metadata and potentially expose or misuse restricted sharing group relationships.
The patch changes the authorization logic so that the sharing group permission check is performed whenever a non-empty sharing_group_id is provided, regardless of the selected distribution value.
Weakness: CWE-863
Which versions are affected by CVE-2026-61474?
How do I fix CVE-2026-61474?
No fix has been published for CVE-2026-61474 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-2026-61474 being exploited?
There is no known exploitation of CVE-2026-61474 in the wild and no public exploit code.
Sources
Also known as GHSA-x9x8-26mr-9wmm.