CVE-2026-79667

Ech0 version 4.3.4 and earlier fails to reliably enforce scoped access token (least-privilege) restrictions on several privileged admin routes. Multiple privileged endpoints (e.g., /api/inbox, /api/panel/comments, /api/backup/export) omit scope checks and authorize based only on the user's admin role, and the backup export handler discards token scope metadata entirely. An attacker holding a deliberately limited (low-scope) admin access token can reach broader privileged functionality than intended, including reading the inbox and exporting a full database backup ZIP archive. Fixed in 4.4.3.

• CWE-285

• https://github.com/lin-snow/Ech0/security/advisories/GHSA-4h9q-p5j4-xvvh
• https://www.vulncheck.com/advisories/ech0-before-authentication-bypass-via-scope-enforcement
• https://github.com/lin-snow/Ech0/security/advisories/GHSA-4h9q-p5j4-xvvh

Published

Aug 25, 2026

Last Modified

Aug 31, 2026

Status

Deferred

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