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 (.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.

Score

CVSS 3.1 10.0 Critical

Status

Analyzed - security-advisories@github.com

Published

2026-05-08

Last modified

2026-05-11

Weaknesses

CWE-94

Affected products

• Postiz (Gitroom)
• Postiz-app (Gitroomhq)

References

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