CVE-2026-79665

High

Description

Ech0 before 4.5.1 contains an authorization bypass vulnerability where session tokens skip scope validation in RequireScopes middleware, allowing logged-in non-admin users to access admin endpoints. Attackers can read system logs, visitor statistics, user emails, and subscribe to live WebSocket logs by sending authenticated session tokens to unprotected endpoints.

SeverityHigh

CVSS8.8

Exploit probability—

ProductEch0

PublishedAug 25, 2026

First seenAug 25, 2026

Weakness typeCWE-862Missing authorization

How to fix

Update

lin-snow Ech04.5.1 or later

Vendor advisories

github.com/lin-snow/Ech0/security/advisories/GHSA-hmmq-qh6g-6wgh

Affected products

Product	Affected versions	Fixed in
lin-snow Ech0	v < 4.5.1	4.5.1

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