MISP contains an authorization flaw in its correlation handling during attribute searches. (CVE-2026-104912)
MISP versions prior to 2.5.48 contain an authorization flaw in correlation handling during attribute searches. The system uses a stale distribution snapshot for authorization checks instead of the live event access control list, allowing authenticated users with read access to retrieve attributes and event details from events they no longer have permission to view. This flaw affects confidentiality by exposing unauthorized attribute values and event metadata.
AI Analysis
Technical Summary
MISP has an authorization vulnerability in its correlation handling mechanism during attribute searches. When a user triggers correlation lookups, the system authorizes access based on a stale distribution snapshot stored on the correlation row rather than the current event access control list. Since the correlation row's distribution columns are a point-in-time copy lacking a published flag, authorization checks become incorrect if an event is later restricted (e.g., sharing group changed or unpublished). Consequently, authenticated users with read access to some events can access attributes and event details from events they should no longer see. This affects MISP versions prior to 2.5.48.
Potential Impact
An authenticated user with at least read access can gain unauthorized access to attribute values and event metadata from events that have been restricted after correlation creation. This leads to a confidentiality breach, exposing sensitive information that should be inaccessible to the user.
Mitigation Recommendations
A fix is available in MISP version 2.5.48. Users should upgrade to version 2.5.48 or later to resolve this authorization flaw. No other mitigation guidance is provided or necessary as the issue is addressed by the official fix.
MISP contains an authorization flaw in its correlation handling during attribute searches. (CVE-2026-104912)
Description
MISP versions prior to 2.5.48 contain an authorization flaw in correlation handling during attribute searches. The system uses a stale distribution snapshot for authorization checks instead of the live event access control list, allowing authenticated users with read access to retrieve attributes and event details from events they no longer have permission to view. This flaw affects confidentiality by exposing unauthorized attribute values and event metadata.
CVSS v4.0
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
MISP has an authorization vulnerability in its correlation handling mechanism during attribute searches. When a user triggers correlation lookups, the system authorizes access based on a stale distribution snapshot stored on the correlation row rather than the current event access control list. Since the correlation row's distribution columns are a point-in-time copy lacking a published flag, authorization checks become incorrect if an event is later restricted (e.g., sharing group changed or unpublished). Consequently, authenticated users with read access to some events can access attributes and event details from events they should no longer see. This affects MISP versions prior to 2.5.48.
Potential Impact
An authenticated user with at least read access can gain unauthorized access to attribute values and event metadata from events that have been restricted after correlation creation. This leads to a confidentiality breach, exposing sensitive information that should be inaccessible to the user.
Mitigation Recommendations
A fix is available in MISP version 2.5.48. Users should upgrade to version 2.5.48 or later to resolve this authorization flaw. No other mitigation guidance is provided or necessary as the issue is addressed by the official fix.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-w4mw-2637-h8xp
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-104912"]
- Database Specific Severity
- HIGH
- Cvss Version
- 4.0
Threat ID: 6ac00d21a43b0b3b89fb1341
Added to database: 10/02/2026, 19:59:29 UTC
Last enriched: 10/02/2026, 20:15:59 UTC
Last updated: 10/03/2026, 03:07:49 UTC
Views: 7
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