# CVE-2026-91851

## Summary

- **CVE ID:** CVE-2026-91851
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-863, CWE-697
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 15, 2026

## Description

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 Products

- MISP — MISP (0)

## References

- [CNA](https://github.com/MISP/MISP/commit/245b8d63a)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.26%
- **EPSS Percentile:** 18.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._