CVE-2026-34577

HIGH

8.6

Description

Postiz is an AI social media scheduling tool. Prior to version 2.21.3, the GET /public/stream endpoint in PublicController accepts a user-supplied url query parameter and proxies the full HTTP response back to the caller. The only validation is url.endsWith('mp4'), which is trivially bypassable by appending .mp4 as a query parameter value or URL fragment. The endpoint requires no authentication and has no SSRF protections, allowing an unauthenticated attacker to read responses from internal services, cloud metadata endpoints, and other network-internal resources. This issue has been patched in version 2.21.3.

Details CVE

Score CVSS v3.18.6

SeveriteHIGH

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie4/2/2026

Derniere modification4/3/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-918

References

https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.3(security-advisories@github.com)

https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-mv6h-v3jg-g539(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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