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Vulnerability record · CVE-2026-79659 · published 25 August 2026

CVE-2026-79659: Server-side request forgery (SSRF) vulnerability

Ech0 before 4.7.3 contains a server-side request forgery vulnerability in the fetchPeerConnectInfo function that uses unvalidated HTTP requests instead of safe request methods with URL validation. Authenticated attackers can supply arbitrary URLs to access internal services and cloud metadata endpoints by triggering connection health checks or peer connection operations.

8.3 CVSS 4.0 High EPSS 0.26% · top 83.7% CWE-918 · Server-side request forgery (SSRF) Awaiting Analysis
8.3CVSS 4.0 base score
0.26%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
23 Sep 2026Last modified by NVD

Description

Ech0 before 4.7.3 contains a server-side request forgery vulnerability in the fetchPeerConnectInfo function that uses unvalidated HTTP requests instead of safe request methods with URL validation. Authenticated attackers can supply arbitrary URLs to access internal services and cloud metadata endpoints by triggering connection health checks or peer connection operations.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/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-8mc6-xjpr-h98x
https://www.vulncheck.com/advisories/ech0-before-server-side-request-forgery-via-fetchpeerconnectinfo
https://github.com/lin-snow/Ech0/security/advisories/GHSA-8mc6-xjpr-h98x

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-79659), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.