CVE-2026-34590

Postiz (AI social media scheduling tool) contains a vulnerability in the POST /webhooks/ endpoint prior to v2.21.4, where WebhooksDto validates the url with only @IsUrl() (format check) and lacks @IsSafeWebhookUrl, allowing blind SSRF because the orchestrator fetches the stored webhook URL withou...

CVE-2026-34590 Postiz: SSRF via Webhook Creation Endpoint Missing URL Safety Validation

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 updat...