Vulnerability · Published Aug 25, 2026 · Assigned by VulnCheck
CVE-2026-79672Ech0 before 4.4.3 Authentication Bypass via Comment Panel
Medium 5.5
In plain English
A medium-severity missing authorization in Ech0 from lin-snow. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Ech0 before 4.4.3 fails to enforce scope-based authorization on nine comment panel admin endpoints, allowing access tokens with minimal scopes to perform full comment moderation operations. Attackers with a limited-scope access token can list, approve, reject, delete comments, and modify comment system settings by directly accessing the unprotected panel endpoints.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/lin-snow/ech0 | 4.4.3 | GHSA-fwg7-53p4-g33c |
| Go | github.com/lin-snow/ech0 | no fix listed | GO-2026-5382 |
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
References
- GitHub Security Advisory (GHSA-fwg7-53p4-g33c) vendor-advisory
- VulnCheck Advisory: Ech0 before 4.4.3 Authentication Bypass via Comment Panel third-party-advisory