CVE-2026-34590

MEDIUM

5.4

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung5.4

SchweregradMEDIUM

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienLOW

BenutzerinteraktionNONE

Veroffentlicht4/2/2026

Zuletzt geandert4/3/2026

Quellenvd

Honeypot-Sichtungen0

Schwachen (CWE)

CWE-918

Referenzen

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)

IOC Korrelationen

Keine Korrelationen erfasst

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