CVE-2026-104102

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/9001/copyparty/commit/b331bb1c8c8cc306b91e4d94221969335a7a3e86
https://github.com/9001/copyparty/releases/tag/v1.20.19
https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9
https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9
https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9
https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9

Configurations

No configuration.

History

12 Oct 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-12 19:16

Updated : 2026-10-13 17:17

NVD link : CVE-2026-104102

Mitre link : CVE-2026-104102

CVE.ORG link : CVE-2026-104102

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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