{"id":"CVE-2026-110628","title":"Kan 0.5.5 through 0.6.0 contains an unauthenticated server-side request forgery vulnerability in the /api/download/attatchment route due to an incomplete fix for CVE-2026-32255","summary":"Kan 0.5.5 through 0.6.0 contains an unauthenticated server-side request forgery vulnerability in the /api/download/attatchment route due to an incomplete fix for CVE-2026-32255. When S3_ENDPOINT is unset, attackers can pass arbitrary url…","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"],"published":"2026-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T15:17:15.653","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-110628","references":[{"url":"https://github.com/kanbn/kan","label":"disclosure@vulncheck.com"},{"url":"https://github.com/kanbn/kan/blob/v0.6.0/.env.example#L25-L27","label":"disclosure@vulncheck.com"},{"url":"https://github.com/kanbn/kan/blob/v0.6.0/apps/web/src/pages/api/download/attatchment.ts#L21-L52","label":"disclosure@vulncheck.com"},{"url":"https://github.com/kanbn/kan/commit/53397d8e81dc1494d94132848c1f0416f1152bd7","label":"disclosure@vulncheck.com"},{"url":"https://github.com/kanbn/kan/pull/590","label":"disclosure@vulncheck.com"},{"url":"https://github.com/kanbn/kan/security/advisories/GHSA-qrx8-9hc6-jvqg","label":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@leediay/HyIxU63ofg","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/kan-0.5.5-through-0.6.0-unauthenticated-ssrf-via-api-download-attatchment","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"ingestedAt":"2026-10-14T15:36:14.010Z","slug":"CVE-2026-110628","body":"## Overview\n\nKan 0.5.5 through 0.6.0 contains an unauthenticated server-side request forgery vulnerability in the /api/download/attatchment route due to an incomplete fix for CVE-2026-32255. When S3_ENDPOINT is unset, attackers can pass arbitrary url query parameters to fetch() to read internal services, localhost ports, and cloud instance metadata.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":47,"depthScoreParts":{"impact":47.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}