{"id":"CVE-2026-110628","summary":"Kan 0.5.5 through 0.6.0 Unauthenticated SSRF via /api/download/attatchment","details":"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 query parameters to fetch() to read internal services, localhost ports, and cloud instance metadata.","aliases":["CVE-2026-32255","GHSA-qrx8-9hc6-jvqg"],"modified":"2026-10-15T02:55:52.100975973Z","published":"2026-10-14T14:17:03.232Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110628.json"},"references":[{"type":"WEB","url":"https://github.com"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110628.json"},{"type":"PACKAGE","url":"https://github.com/kanbn/kan"},{"type":"ARTICLE","url":"https://github.com/kanbn/kan/blob/v0.6.0/.env.example#L25-L27"},{"type":"ARTICLE","url":"https://github.com/kanbn/kan/blob/v0.6.0/apps/web/src/pages/api/download/attatchment.ts#L21-L52"},{"type":"FIX","url":"https://github.com/kanbn/kan/commit/53397d8e81dc1494d94132848c1f0416f1152bd7"},{"type":"FIX","url":"https://github.com/kanbn/kan/pull/590"},{"type":"ADVISORY","url":"https://github.com/kanbn/kan/security/advisories/GHSA-qrx8-9hc6-jvqg"},{"type":"ADVISORY","url":"https://hackmd.io/@leediay/HyIxU63ofg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110628"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/kan-0.5.5-through-0.6.0-unauthenticated-ssrf-via-api-download-attatchment"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/kanbn/kan","events":[{"introduced":"2360c5075d0c194c405831aff05f515683a6cae7"},{"last_affected":"a994c061ac7b508ee3226f5c2fe634ad5802c090"}],"database_specific":{"extracted_events":[{"introduced":"0.5.5"},{"last_affected":"0.6.0"}],"source":"AFFECTED_FIELD"}}],"versions":["v0.6.0","v0.5.6","v0.5.5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110628.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N"}]}