---
cve: "CVE-2026-42298"
severity: "CRITICAL"
cvss: 10.0
epss: "50%"
vendor: "gitroomhq"
kev: false
exploited: false
published: "2026-05-08 23:16:36"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-12T23:11:03+02:00"
---

# CVE-2026-42298

> 10.0 CRITICAL · 🧪 PoC

## Beschreibung

Postiz is an AI social media scheduling tool. Prior to commit da44801, a "Pwn Request" vulnerability in the Build and Publish PR Docker Image workflow (.github/workflows/pr-docker-build.yml) allows any unauthenticated user to execute arbitrary code during the Docker build process and exfiltrate a highly privileged GITHUB_TOKEN (write-all permissions). This can be achieved simply by opening a Pull Request from a fork with a maliciously modified Dockerfile.dev. This issue has been patched via commit da44801.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 7236213ea4520bd67b45688c2787d1f4586b3b51 (Commit)
- da448012dd87e94944cbe83a38e7fd023269ec46 (Commit)

## Referenzen

- <https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-v975-9h5p-xhm4>
- <https://github.com/gitroomhq/postiz-app/commit/da448012dd87e94944cbe83a38e7fd023269ec46>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-42298) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_