CVE-2026-42298: 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…

PriorityP267critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

0.50%

39.3th percentile

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
gitroom	postiz	< 2.21.7	2.21.7
gitroomhq	postiz-app	< da448012dd87e94944cbe83a38e7fd023269ec46	da448012dd87e94944cbe83a38e7fd023269ec46

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