What is CVE-2026-42298?

CVE-2026-42298 is a critical-severity vulnerability in Gitroom Postiz, classified under Code Injection. CVSS score: 10.0/10. Published 2026-05-08.

How severe is CVE-2026-42298?

Critical severity. CVSS v3 base score is 10.0 out of 10.

RCE in Gitroom Postiz

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 arbit…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.002 (41.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Gitroom Postiz
Gitroomhq Postiz-app — versions < da448012dd87e94944cbe83a38e7fd023269ec46

Weakness classification (CWE)

CWE-94 — Code Injection

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (URL Repurposed, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-42298?: CVE-2026-42298 is a critical-severity vulnerability in Gitroom Postiz, classified under Code Injection. CVSS score: 10.0/10. Published 2026-05-08.
How severe is CVE-2026-42298?: Critical severity. CVSS v3 base score is 10.0 out of 10.