{"id":"CVE-2026-66063","aliases":["GHSA-wg2q-39h6-66x9","GO-2026-6137"],"url":"https://o3.security/vulnerability/CVE-2026-66063","summary":"goshs has a Path Traversal issue","details":"goshs is a feature-rich single-binary file server for red teamers and developers. Prior to 2.1.5, the httpserver/updown.go multipart upload handler split part.FileName() on / but did not reject .., allowing an unauthenticated upload with filename .. to create a file outside the served tree. This issue is fixed in version 2.1.5.","published":"2026-07-28T22:07:15.558Z","modified":"2026-09-09T18:26:41.184067112Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},"epss":{"score":0.00233,"percentile":0.1412,"asOf":"2026-09-11"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"goshs.de/goshs/v2","fixedVersion":"2.1.5-0.20260727065949-f3ef599e4091"},{"ecosystem":"Go","name":"github.com/patrickhener/goshs/v2","fixedVersion":"2.1.5-0.20260727065949-f3ef599e4091"},{"ecosystem":"Go","name":"goshs.de/goshs","fixedVersion":null},{"ecosystem":"Go","name":"github.com/patrickhener/goshs","fixedVersion":null}],"fix":{"url":"https://github.com/goshs-labs/goshs/commit/f3ef599e409151d1380866e47de8b1afb0bb54fa","label":"goshs-labs/goshs@f3ef599"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66063.json"},{"type":"ADVISORY","url":"https://github.com/goshs-labs/goshs/security/advisories/GHSA-wg2q-39h6-66x9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66063"},{"type":"FIX","url":"https://github.com/goshs-labs/goshs/commit/f3ef599e409151d1380866e47de8b1afb0bb54fa"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-09T18:26:41.184067112Z"}}