---
cve: "CVE-2026-91851"
severity: "MEDIUM"
cvss: 5.3
epss: "0.3%"
vendor: "MISP"
kev: false
exploited: false
published: "2026-09-15 09:16:46"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T11:00:47+02:00"
---

# CVE-2026-91851

> 5.3 MEDIUM · 🧪 PoC

## Beschreibung

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

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 245b8d63a (Commit)

## Referenzen

- <https://github.com/MISP/MISP/commit/245b8d63a>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-91851) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_