[ CVE-2026-104912 · Published 2 Oct 2026 ]
Vulnerability in MISP
[ Description ]Official description
MISP contains an authorization flaw in its correlation handling during attribute searches. When a user performs an attribute search that triggers correlation lookups, the system authorized access to correlated attributes and events based on a stale distribution snapshot stored on the correlation row rather than the live event access control list. Because the correlation row's distribution columns are a point-in-time copy that lacks a published flag, the authorization check becomes incorrect when an event is subsequently restricted (for example, its sharing group is changed or it is unpublished). As a result, an authenticated user could retrieve attributes and event details belonging to events they no longer have permission to view. Preconditions: - An authenticated user with at least read access to some events in the instance. - The existence of correlations between events, at least one of which has been restricted after the correlation was created. Impact: - Confidentiality: exposure of attribute values and event metadata that the user is not authorized to access. Affected versions: MISP prior to v2.5.48.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.
[ Advisories ]Government CERT advisories
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BSI CERT-BundWID-SEC-2026-3729
MISP: Multiple vulnerabilities Translated from German