Description
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 resolve DNS independently. An attacker controlling a DNS server can exploit this gap via DNS rebinding to redirect requests to internal network addresses. This issue has been patched in version 2.21.7.
CVSS 6.5EPSS 0.22399999999999998%Risque 0.66
Voir la source- Publication
- 2026-05-08 23:16:37
- Versions concernées
- >=2.16.6,<2.21.7
- Type
- Core software
- Dernière modification
- 2026-07-24 21:10:00
- Vecteur
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N