---
cve: "CVE-2026-112774"
severity: "HIGH"
cvss: 8.7
epss: "0.6%"
vendor: "craftcms"
kev: false
exploited: false
published: "2026-10-19 19:10:52"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-11-01T10:12:54+01:00"
---

# CVE-2026-112774

> 8.7 HIGH · 🧪 PoC

## Beschreibung

Craft CMS from 5.8.0 before 5.11.0 contains a remote code execution vulnerability that allows authenticated administrators to inject Yii behaviors by supplying a JSON-string field layout to ContentBlock::setFieldLayout(). Attackers with allowAdminChanges enabled can include 'as X' or 'on X' keys that bypass cleanseConfig() to execute OS commands as the web user and disclose secrets.

## CNA-Record (Kanon, cvelistV5)

- CNA: **VulnCheck**
- State: PUBLISHED
- Stand: 2026-10-20 14:36:01
- CNA-CVSS: **8.7** (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

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

## Schwachstellen-Klasse

- **CWE-94** — Improper Control of Generation of Code ('Code Injection')
  The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

## Angriffsmuster (CAPEC)

- [CAPEC-35 — Leverage Executable Code in Non-Executable Files](https://capec.mitre.org/data/definitions/35.html) _(Severity: Very High)_
- [CAPEC-77 — Manipulating User-Controlled Variables](https://capec.mitre.org/data/definitions/77.html) _(Severity: Very High)_
- [CAPEC-242 — Code Injection](https://capec.mitre.org/data/definitions/242.html) _(Severity: High)_

## ATT&CK-Techniken

- [T1027.006 — Obfuscated Files or Information: HTML Smuggling](https://attack.mitre.org/techniques/T1027/006/)
- [T1027.009 — Obfuscated Files or Information: Embedded Payloads](https://attack.mitre.org/techniques/T1027/009/)
- [T1564.009 — Hide Artifacts: Resource Forking](https://attack.mitre.org/techniques/T1564/009/)

## Patch verfügbar (OSV)

- 2255717bfd5cc502751601aa68bf72eea035cd47 (Commit)

## Referenzen

- <https://github.com/craftcms/cms/security/advisories/GHSA-j6r9-fxgv-j7x5>
- <https://www.vulncheck.com/advisories/craft-cms-5.8.0-before-5.11.0-admin-rce-via-contentblock-field-layout>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-112774/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_