{"apiVersion":"1.0","identifier":"CVE-2026-79671","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.","publishedAt":"2026-08-25T12:16:35","lastModifiedAt":"2026-08-27T17:20:48","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-79671","cvssScore":5.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","epssProbability":0.00245,"riskScore":0.56,"affectedProduct":"Ech0","affectedVersions":"<=4.2.1","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-79671","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-79671","en":"https://www.redsauce.net/en/cves/CVE-2026-79671","fr":"https://www.redsauce.net/fr/cves/CVE-2026-79671","pt":"https://www.redsauce.net/pt/cves/CVE-2026-79671","de":"https://www.redsauce.net/de/cves/CVE-2026-79671","sk":"https://www.redsauce.net/sk/cves/CVE-2026-79671","el":"https://www.redsauce.net/el/cves/CVE-2026-79671"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-79671"}}