Improper Permission Filter in MISP Affecting Multiple User Roles
CVE-2026-91851

5.3MEDIUM

Key Information:

Vendor

Misp

Status
Misp
Vendor
CVE Published:
15 September 2026

What is CVE-2026-91851?

An improper access control vulnerability exists in MISP, where the DashboardsController::listTemplates() function fails to adequately restrict access to dashboard templates based on user permissions. The issue arises due to the comparison of varchar restrict_to_permission_flag with numerical values, allowing for unintended access to templates that should be restricted. This flaw can lead to unauthorized users gaining access to sensitive information and functionalities, exposing organizations to potential security risks.

Affected Version(s)

MISP 0 < 2.5.46

References

https://github.com/MISP/MISP/commit/245b8d63a
patch

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

iglocska
Claude Opus 5 (1M context)
.