CVE-2026-40168HIGH 8.2EPSS p28.8%

CVE-2026-40168CVE-2026-40168

Description

Postiz is an AI social media scheduling tool. Prior to 2.21.5, the /api/public/stream endpoint is vulnerable to SSRF. Although the application validates the initially supplied URL and blocks direct private/internal hosts, it does not re-validate the final destination after HTTP redirects. As a result, an attacker can supply a public HTTPS URL that passes validation and then redirects the server-side request to an internal resource.

Scoring

CVSS 3.18.2 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
EPSS0.37% probability of exploitation · percentile 28.8% · 2026-06-18T12:00:27Z
Published2026-04-10
Last modified2026-04-14

Underlying weaknesses· 1

CWE-918

References

  1. https://github.com/gitroomhq/postiz-app/commit/30e8b777098157362769226d1b46d83ad616cb06
  2. https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.5
  3. https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-34w8-5j2v-h6ww
  4. https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-34w8-5j2v-h6ww

1

TypeTargetConfidenceTier
WeaknessServer-Side Request Forgery (SSRF)cwe-9180%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.