{"id":"CVE-2026-110628","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-110628","generatedAt":"2026-10-28T04:14:43.078Z","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.","description":"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.","published":"2026-10-14T15:17:16.000Z","lastModified":"2026-10-16T18:17:33.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":9.2,"severity":"CRITICAL","vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-918"],"affected":[],"epss":{"score":0.00425,"percentile":0.36593,"date":"2026-10-27","history":[{"date":"2026-10-15","score":0.00425,"percentile":0.35255}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-14T15:17:16.000Z","detail":{"score":"9.2","severity":"CRITICAL","publishedAt":"2026-10-14T15:17:15.540Z"},"summary":"New CVE, critical severity (CVSS 9.2)."}],"references":[{"url":"https://github.com/kanbn/kan","source":"disclosure@vulncheck.com"},{"url":"https://github.com/kanbn/kan/blob/v0.6.0/.env.example#L25-L27","source":"disclosure@vulncheck.com"},{"url":"https://github.com/kanbn/kan/blob/v0.6.0/apps/web/src/pages/api/download/attatchment.ts#L21-L52","source":"disclosure@vulncheck.com"},{"url":"https://github.com/kanbn/kan/commit/53397d8e81dc1494d94132848c1f0416f1152bd7","source":"disclosure@vulncheck.com"},{"url":"https://github.com/kanbn/kan/pull/590","source":"disclosure@vulncheck.com"},{"url":"https://github.com/kanbn/kan/security/advisories/GHSA-qrx8-9hc6-jvqg","source":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@leediay/HyIxU63ofg","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/kan-0.5.5-through-0.6.0-unauthenticated-ssrf-via-api-download-attatchment","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-110628","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}