Copyparty vulnerable to file/dirkey confusion
A valid filekey could potentially be converted into a dirkey, granting read-access to the containing folder.
This issue only affected volumes which simultaneously enable both filekeys and dirkeys, with volflag dk or dks combined with fk or fka.
Both required features are default-disabled, and must be explicitly enabled in the volflags (the "flags" section of a volume).
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | copyparty | < 1.20.17 | 1.20.17 |
References
- https://github.com/9001/copyparty/security/advisories/GHSA-x5pq-m9p8-f4vx
- https://github.com/9001/copyparty/commit/e40755331ba9449993ff482456e6bdd2c6deb950
- https://github.com/9001/copyparty
- https://github.com/9001/copyparty/releases/tag/v1.20.17
- https://pypi.org/project/copyparty
- https://github.com/advisories/GHSA-x5pq-m9p8-f4vx
- https://nvd.nist.gov/vuln/detail/CVE-2026-70657
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
CWE-863- Platform
- Python (PyPI)
- Package
copyparty- Disclosed
- 18.08.2026
- Updated
- 11.10.2026 14:19
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-3660 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-x5pq-m9p8-f4vx - CC BY 4.0
Vulnerability history: copyparty
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 14
- First → latest
- 07.2023 08.2026
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- High 3
- Medium 8
- Low 3
Disclosures per year
- 2023: 3
- 2024: 0
- 2025: 6
- 2026: 5
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