CVE-2026-34576

HIGH

7.7

Descripcion

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 file extension check (.png, .jpg, etc.) which is trivially bypassed by appending an image extension to any URL path. An authenticated API user can fetch internal network resources, cloud instance metadata, and other internal services, with the response data uploaded to storage and returned to the attacker. This issue has been patched in version 2.21.3.

Detalles CVE

Puntuacion CVSS v3.17.7

SeveridadHIGH

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

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosLOW

Interaccion usuarioNONE

Publicado4/2/2026

Ultima modificacion4/7/2026

Fuentenvd

Avistamientos honeypot0

Productos afectados

gitroom:postiz

Debilidades (CWE)

CWE-918

Referencias

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

https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-89vp-m2qw-7v34(security-advisories@github.com)

Correlaciones IOC

Sin correlaciones registradas

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