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.

CVSS v3 7.6 HIGH

7.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-25 12:16

Updated : 2026-08-31 20:50

NVD link : CVE-2026-79667

Mitre link : CVE-2026-79667

CVE.ORG link : CVE-2026-79667

JSON object : View

Products Affected

No product.

CWE

CWE-285

Improper Authorization

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