{"id":"CVE-2026-56708","title":"Grav API plugin before 1.0.16 contains a server-side request forgery vulnerability in webhook delivery that allows attackers to bypass hostname validation by DNS rebinding","summary":"Grav API plugin before 1.0.16 contains a server-side request forgery vulnerability in webhook delivery that allows attackers to bypass hostname validation by DNS rebinding. Attackers controlling authoritative DNS for a configured webhook…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cwe":["CWE-367"],"published":"2026-08-25","updated":"2026-10-12","sourceUpdated":"2026-10-12T15:10:00.207","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-56708","references":[{"url":"https://github.com/getgrav/grav/security/advisories/GHSA-hq2v-cgw4-fw2w","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/grav-api-plugin-before-ssrf-via-dns-rebinding","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00282,"epssPercentile":0.19068,"ingestedAt":"2026-10-12T15:55:08.146Z","slug":"CVE-2026-56708","body":"## Overview\n\nGrav API plugin before 1.0.16 contains a server-side request forgery vulnerability in webhook delivery that allows attackers to bypass hostname validation by DNS rebinding. Attackers controlling authoritative DNS for a configured webhook hostname can answer validation lookups with public addresses and delivery lookups with private addresses to reach internal network resources.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}