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CVE-2026-40487

קריטית 9.0

תיאור (מקור, אנגלית)

Postiz is an AI social media scheduling tool. Prior to version 2.21.6, a file upload validation bypass allows any authenticated user to upload arbitrary HTML, SVG, or other executable file types to the server by spoofing the `Content-Type` header. The uploaded files are then served by nginx with a Content-Type derived from their original extension (`text/html`, `image/svg+xml`), enabling Stored Cross-Site Scripting (XSS) in the context of the application's origin. This can lead to session riding, account takeover, and full compromise of other users' accounts. Version 2.21.6 contains a fix.

מדדים

CVSS 3.1
9.0 (CRITICAL) מקור הציון: NVD CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS — סבירות ניצול
0% (אחוזון 000) נכון ל-28/7/2026
CWE
CWE-79, CWE-345, CWE-434

מוצרים מושפעים

gitroom: postiz

קישורים