Postiz: forged signed tokens and post-media path traversal let any registered user take over orgs and read server files (CVE-2026-115933, CVE-2026-115932) ยท updates https://pwn.watch/i/postiz-account-takeover-file-read-cve-2026-115933 Two critical bugs in the self-hosted Postiz social media scheduler, both reported with working PoCs by Anthropic. Postiz signed session, invite and password-reset tokens with one shared secret and no purpose marker, and an extension-refresh route signed request data, so any registered user could forge tokens and become super admin of another organization (CVE-2026-115933, CVSS 9.9). A separate path traversal in post media let a registered user have the worker send any server file, including the JWT secret and env file, to their own Discord server (CVE-2026-115932, CVSS 9.6). Both are fixed in Postiz 2.25.3; self-registration is open by default, so upgrade now. en Sat, 24 Oct 2026 00:00:00 GMT Postiz: forged signed tokens and post-media path traversal let any registered user take over orgs and read server files (CVE-2026-115933, CVE-2026-115932): Postiz 2.25.3 ships fixes for PSA-2026-E9AHFV (CVE-2026-115932, path traversal) and PSA-2026-YT2HMH (CVE-2026-115933, forged tokens); all users are told to upgrade immediately. Workarounds until then: set DISABLE_REGISTRATION=true and block POST /integrations/extension-refresh at the reverse proxy. https://pwn.watch/i/postiz-account-takeover-file-read-cve-2026-115933 https://pwn.watch/i/postiz-account-takeover-file-read-cve-2026-115933#2026-10-24-32d2e59e Sat, 24 Oct 2026 00:00:00 GMT critical <p><a href="https://github.com/gitroomhq/postiz-app/releases/tag/v2.25.3">Source</a></p> Postiz: forged signed tokens and post-media path traversal let any registered user take over orgs and read server files (CVE-2026-115933, CVE-2026-115932): Anthropic reports both bugs to Postiz with working PoCs (17:45 UTC); Postiz reproduces them within 15 minutes. https://pwn.watch/i/postiz-account-takeover-file-read-cve-2026-115933 https://pwn.watch/i/postiz-account-takeover-file-read-cve-2026-115933#2026-10-23-891532c0 Fri, 23 Oct 2026 00:00:00 GMT critical <p>Postiz: forged signed tokens and post-media path traversal let any registered user take over orgs and read server files (CVE-2026-115933, CVE-2026-115932): Anthropic reports both bugs to Postiz with working PoCs (17:45 UTC); Postiz reproduces them within 15 minutes.</p>