Medium 4.3Published Aug 18, 2026

CVE-2026-70657Copyparty: file/dirkey confusion

Updated under an hour ago (2026-10-19 08:50 UTC)

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It affects 9001 copyparty. Add what you run to find out whether that includes you.

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Every CVE for 9001 copyparty

Exploited in the last 30 days

Copyparty is a portable file server. Prior to 1.20.17, copyparty volumes with the dk or dks directory-key flag combined with the fk or fka file-key flag can convert a valid file key into a directory key, granting read access to the containing folder. This vulnerability was only reachable if both types of keys (filekeys and dirkeys) were manually enabled in the volume flags simultaneously. This issue is fixed in version 1.20.17.

CVSS: 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-863
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Aug 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

9001 copyparty 9001:copyparty (from the name)	before 1.20.17	CNA record

References

https://github.com/9001/copyparty/security/advisories/GHSA-x5pq-m9p8-f4vxx-refsource-confirm
https://github.com/9001/copyparty/commit/e40755331ba9449993ff482456e6bdd2c6deb950x-refsource-misc
https://github.com/9001/copyparty/releases/tag/v1.20.17x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.