CVE WatchAug 27, 2026

CVE-2026-79671

Ech0 through 4.2.1 contains a server-side request forgery vulnerability in the validateWebhookURL function (webhook_setting_service.go), whi

CVSS

5.5

Medium

EPSS

0.2%

p16

KEV

—

Exploit Today

0-100

Published: Aug 25, 2026 · Last modified: Aug 27, 2026 · CWE-918

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-08-262026-08-27

Technical description

Ech0 through 4.2.1 contains a server-side request forgery vulnerability in the validateWebhookURL function (webhook_setting_service.go), which only validates literal IP addresses via net.ParseIP() and fails to reject hostnames that DNS-resolve to private or internal IPs (e.g., 169.254.169.254.nip.io). An attacker with admin privileges can create a webhook with such a hostname to bypass validation and cause the server to make requests to internal services, cloud metadata endpoints, and private network resources. The issue is fixed in 4.4.3.

Official references

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