CVE-2026-34590

MEDIUM

5.4

Descripcion

Postiz is an AI social media scheduling tool. Prior to version 2.21.4, the POST /webhooks/ endpoint for creating webhooks uses WebhooksDto which validates the url field with only @IsUrl() (format check), missing the @IsSafeWebhookUrl validator that blocks internal/private network addresses. The update (PUT /webhooks/) and test (POST /webhooks/send) endpoints correctly apply @IsSafeWebhookUrl. When a post is published, the orchestrator fetches the stored webhook URL without runtime validation, enabling blind SSRF against internal services. This issue has been patched in version 2.21.4.

Detalles CVE

Puntuacion CVSS v3.15.4

SeveridadMEDIUM

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

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosLOW

Interaccion usuarioNONE

Publicado4/2/2026

Ultima modificacion4/3/2026

Fuentenvd

Avistamientos honeypot0

Debilidades (CWE)

CWE-918

Referencias

https://github.com/gitroomhq/postiz-app/commit/5ae4c950db6aa516a31454b7a45b9480bca40a11(security-advisories@github.com)

https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.4(security-advisories@github.com)

https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-wc9c-7cv8-m225(security-advisories@github.com)

Correlaciones IOC

Sin correlaciones registradas

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