Security Advisory

CVE-2026-79671

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-25 11:33:32

Last updated 2026-08-25 11:33:32

Assigner VulnCheck

CVSS score 5.5

State PUBLISHED

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.

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