CVE-2026-34577

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...

CVE-2026-34576

Postiz (AI social media scheduling tool) has a SSRF vulnerability in the POST /public/v1/upload-from-url endpoint prior to version 2.21.3. An authenticated API user can supply a URL, which is fetched server-side via axios.get() without SSRF protections; only file-extension validation exists (e.g....

PT-2026-29853

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...