CVE-2026-42298

critical · 10

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

0.5%

EPSS (exploit prob.)

42nd

EPSS percentile

2026-05-08

Published

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

Weaknesses

CWE-94

Affected products

Vendor	Product	Affected versions
gitroom	postiz	< 2.21.7

Check a specific version with /api/v1/cve/match.

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-42298