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CVE-2026-70657 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:3.7 LOWVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

CNA: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/9001/copyparty/commit/e40755331ba9449993ff482456e6bdd2c6deb950	[email protected]	Source CodeVendor
https://github.com/9001/copyparty/releases/tag/v1.20.17	[email protected]	Release NotesVendor
https://github.com/9001/copyparty/security/advisories/GHSA-x5pq-m9p8-f4vx	[email protected]	AdvisoryRemedyVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-863	Incorrect Authorization	[email protected]

Affected Products

Product	Versions
copyparty	< 1.20.17 (semver)
CPE cpe:2.3:a:copyparty_project:copyparty:::::::: Remediation Upgrade: 1.20.17moderate efforthttps://github.com/9001/copyparty/releases/tag/v1.20.17 Workaround:low effort Disable both filekeys and dirkeys in the volume flags (the "flags" section of a volume).

Change History

3 change records found show changes

Date	Action	Recorded By
Aug 19, 2026	CVE Modified	[email protected]
Aug 18, 2026	CVE Modified	CISA-ADP
Aug 18, 2026	New CVE Received	[email protected]