---
cve: "CVE-2026-111893"
severity: "HIGH"
cvss: 8.5
epss: "0.3%"
vendor: "thorsten"
kev: false
exploited: false
published: "2026-10-17 19:16:30"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-25T08:16:00+01:00"
---

# CVE-2026-111893

> 8.5 HIGH · 🧪 PoC

## Beschreibung

phpMyFAQ 4.2.0-alpha before 4.2.0-beta contains a privilege escalation vulnerability in GroupController::saveCategoryRestrictions() that lets delegated administrators assign categories outside their own scope. Category-restricted administrators can POST to /admin/api/group/category-restrictions with out-of-scope or empty categoryIds to grant groups unrestricted category access.

## CNA-Record (Kanon, cvelistV5)

- CNA: **VulnCheck**
- State: PUBLISHED
- Stand: 2026-10-18 11:20:40
- CNA-CVSS: **8.5** (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
```

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

## Schwachstellen-Klasse

- **CWE-269** — Improper Privilege Management
  The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

## Angriffsmuster (CAPEC)

- [CAPEC-58 — Restful Privilege Elevation](https://capec.mitre.org/data/definitions/58.html) _(Severity: High)_
- [CAPEC-122 — Privilege Abuse](https://capec.mitre.org/data/definitions/122.html) _(Severity: Medium)_
- [CAPEC-233 — Privilege Escalation](https://capec.mitre.org/data/definitions/233.html)

## ATT&CK-Techniken

- [T1548 — Abuse Elevation Control Mechanism](https://attack.mitre.org/techniques/T1548/)

## Patch verfügbar (OSV)

- e137c1e017b15ffa01181a2380b81e1aea5ae1ad (Commit)

## Referenzen

- <https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-gv7w-78f6-mcmh>
- <https://www.vulncheck.com/advisories/phpmyfaq-4.2.0-alpha-before-4.2.0-beta-privilege-escalation-via-group-category-restrictions-api>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-111893/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_