What is CVE-2026-42346?

CVE-2026-42346 is a medium-severity vulnerability in Gitroomhq Postiz-app, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2026-05-08.

How severe is CVE-2026-42346?

Medium severity. CVSS v3 base score is 6.5 out of 10.

SSRF in Gitroomhq Postiz-app

CVE-2026-42346

Postiz is an AI social media scheduling tool. From version 2.16.6 to before version 2.21.7, all SSRF protections added in v2.21.4–v2.21.6 share a fundamental TOCTOU (Time-of-Check-Time-of-Use) vulnerability: isSafePublicHttpsUrl() resolves…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.000 (11.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.

Affected products

Gitroomhq Postiz-app — versions >= 2.16.6, < 2.21.7

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-42346?: CVE-2026-42346 is a medium-severity vulnerability in Gitroomhq Postiz-app, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2026-05-08.
How severe is CVE-2026-42346?: Medium severity. CVSS v3 base score is 6.5 out of 10.