{"id":"CVE-2026-63306","title":"stoatchat before 0.13.5 contains an unauthenticated server-side request forgery vulnerability in the /proxy and /embed endpoints that accept arbitrary URLs without DNS resolution filtering or private IP range validation","summary":"stoatchat before 0.13.5 contains an unauthenticated server-side request forgery vulnerability in the /proxy and /embed endpoints that accept arbitrary URLs without DNS resolution filtering or private IP range validation. Attackers can en…","severity":"high","cvss":8.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","cwe":["CWE-918"],"vendor":"stoatchat","product":"stoatchat","affected":["stoatchat < 0.13.5"],"published":"2026-07-16","updated":"2026-10-08","sourceUpdated":"2026-10-08T16:17:27.403","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63306","references":[{"url":"https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/stoatchat-before-unauthenticated-ssrf-via-proxy-and-embed-endpoints","label":"disclosure@vulncheck.com"},{"url":"https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-07-16T13:17:07.146090Z"},"epss":0.00409,"epssPercentile":0.33056,"ingestedAt":"2026-10-08T16:52:14.701Z","slug":"CVE-2026-63306","body":"## Overview\n\nstoatchat before 0.13.5 contains an unauthenticated server-side request forgery vulnerability in the /proxy and /embed endpoints that accept arbitrary URLs without DNS resolution filtering or private IP range validation. Attackers can enumerate internal services, fingerprint applications, and reach instance metadata endpoints by supplying malicious URLs or leveraging redirect chains to access internal infrastructure.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":59,"depthScoreParts":{"impact":47.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}