{"id":"CVE-2026-104102","published":"2026-10-12T19:16:36.713","lastModified":"2026-10-13T17:17:15.633","description":"copyparty is a portable file server. Prior to 1.20.19, FTP upload path handling does not confine destinations to configured copyparty volumes. When FTP or FTPS is explicitly enabled, a low-privileged authenticated user can submit traversal paths during upload to create a new file outside configured volumes wherever the copyparty process has write permission. The attacker cannot read or overwrite files, the output name receives a randomized suffix, and copyparty does not execute the file; however, unrelated software on the same host could process the newly created file. This issue is fixed in version 1.20.19.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-22"],"vendors":[],"products":[],"references":[{"url":"https://github.com/9001/copyparty/commit/b331bb1c8c8cc306b91e4d94221969335a7a3e86","tags":[]},{"url":"https://github.com/9001/copyparty/releases/tag/v1.20.19","tags":[]},{"url":"https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9","tags":[]},{"url":"https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9","tags":[]},{"url":"https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9","tags":[]},{"url":"https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9","tags":[]}],"exploitRefs":[{"url":"https://github.com/9001/copyparty/commit/b331bb1c8c8cc306b91e4d94221969335a7a3e86","tags":[]},{"url":"https://github.com/9001/copyparty/releases/tag/v1.20.19","tags":[]},{"url":"https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9","tags":[]},{"url":"https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9","tags":[]},{"url":"https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9","tags":[]},{"url":"https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9","tags":[]}],"hasPoc":true,"ai":null}