What is CVE-2026-34576?

CVE-2026-34576 is a high-severity vulnerability in Gitroom Postiz, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.7/10. Published 2026-04-02.

How severe is CVE-2026-34576?

High severity. CVSS v3 base score is 7.7 out of 10.

SSRF in Gitroom Postiz

CVE-2026-34576

Postiz is an AI social media scheduling tool. Prior to version 2.21.3, the POST /public/v1/upload-from-url endpoint accepts a user-supplied URL and fetches it server-side using axios.get() with no SSRF protections. The only validation is a…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.003 (18.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

Affected products

Gitroom Postiz
Gitroomhq Postiz-app — versions < 2.21.3

Weakness classification (CWE)

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

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
security-advisories@github.com (Product, x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-34576?: CVE-2026-34576 is a high-severity vulnerability in Gitroom Postiz, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.7/10. Published 2026-04-02.
How severe is CVE-2026-34576?: High severity. CVSS v3 base score is 7.7 out of 10.