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Advisory record · GHSA-phv8-wgjp-g4p9

copyparty FTP: upload outside defined volumes (limited path traversal)

CVSS 5.3 MediumEPSS 0.0031 · 24th percentile

Published by the GitHub Advisory Database at 15 Oct 2026, 20:16 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
copypartyPyPI<1.20.191.20.19
Identifiers
GHSA-phv8-wgjp-g4p9 · CVE-2026-104102
Weakness (CWE)
CWE-22
Tags
Published
15 Oct 2026
Updated
15 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The copyparty package before 1.20.19 is affected when its FTP or FTPS server is enabled with the global-option ftp or ftps, which is off by default; SFTP is not affected. An attacker who can upload over FTP or FTPS can create new files in any folder the copyparty process can write to, though filenames get a random suffix and existing files cannot be overwritten. The main risk is to other software on the same system. Upgrade to copyparty 1.20.19 or later.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.3 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0031, the 24th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:08 UTC First seen by agentprime
  2. 31 Oct 2026, 14:08 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.