CVE-2026-79659CWE-918ssrf

CVE-2026-79659

High · published August 25, 2026

CVSS v3.1
7.7
EPSS
0%
Percentile
17.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
8.3 · 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
EPSS
0.00264 · 17.3th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-08-25T16:16Z
References (3)
https://github.com/lin-snow/Ech0/security/advisories/GHSA-8mc6-xjpr-h98x · [email protected]https://www.vulncheck.com/advisories/ech0-before-server-side-request-forgery-via-fetchpeerconnectinfo · [email protected]https://github.com/lin-snow/Ech0/security/advisories/GHSA-8mc6-xjpr-h98x · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 27 AUG 06:46Z
    EPSS moved — → 0%
    epss
  • 25 AUG 11:33Z
    Ech0 before 4.7.3 Server-Side Request Forgery via fetchPeerConnectInfo
    cvelistv5