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Vulnerability record · CVE-2026-79666 · published 25 August 2026

CVE-2026-79666: Missing authorization vulnerability

Ech0 before 4.4.3 fails to enforce administrator authorization on dashboard log endpoints, allowing any authenticated user to access system logs. Attackers with valid user sessions can query GET /api/system/logs and subscribe to SSE and WebSocket log streams to retrieve sensitive operational data including file paths, stack traces, and internal URLs.

7.1 CVSS 4.0 High EPSS 0.39% · top 70.1% CWE-862 · Missing authorization Deferred
7.1CVSS 4.0 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
31 Aug 2026Last modified by NVD

Description

Ech0 before 4.4.3 fails to enforce administrator authorization on dashboard log endpoints, allowing any authenticated user to access system logs. Attackers with valid user sessions can query GET /api/system/logs and subscribe to SSE and WebSocket log streams to retrieve sensitive operational data including file paths, stack traces, and internal URLs.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/lin-snow/Ech0/security/advisories/GHSA-cp79-9mwr-wr49
https://www.vulncheck.com/advisories/ech0-before-missing-authorization-via-dashboard-log-endpoints
https://github.com/lin-snow/Ech0/security/advisories/GHSA-cp79-9mwr-wr49

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Source: NIST National Vulnerability Database (record CVE-2026-79666), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.