CVE-2026-42346

Postiz is an AI social media scheduling tool. From version 2.16.6 to before version 2.21.7, all SSRF protections added in v2.21.4–v2.21.6 share a fundamental TOCTOU Time-of-Check-Time-of-Use vulnerability: isSafePublicHttpsUrl resolves DNS to validate the target IP, but subsequent fetch calls...

PT-2026-39214

Name of the Vulnerable Software and Affected Versions Postiz versions 2.16.6 through 2.21.6 Description Postiz is an AI social media scheduling tool. A Time-of-Check-Time-of-Use TOCTOU issue exists where the isSafePublicHttpsUrl function resolves DNS to validate the target IP, but subsequent fetc...