CVE-2026-91851 — MISP Dashboard Template ACL Bypass Due to VARCHAR-to-Integer Type Coercion in Permission Flag Comparison

Description (CNA)

Affected versions of MISP incorrectly filter dashboard templates that are restricted to a specific permission flag. DashboardsController::listTemplates() allowed a template when either: - its restrict_to_permission_flag matched one of the current user’s permission flags, or - restrict_to_permission_flag equaled integer 0 However, restrict_to_permission_flag is a varchar. MySQL therefore performed numeric coercion when comparing the column against integer 0. Strings such as perm_site_admin convert numerically to zero, making expressions such as perm_site_admin = 0 evaluate true and causing the “unrestricted” branch to match permission-restricted templates as well. Version affected: ≤2.5.45

Affected (CNA)

Vendor / product	Versions
MISP / MISP	affected 0 before 2.5.46

CWE

CWE-863, CWE-697

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.