CVE-2026-27948

6.1 mediumEPSS 0.2%

Medium (6.1) in 9001 copyparty. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in copyparty 1.20.9.

Copyparty is a portable file server. In versions prior to 1.20.9, an XSS allows for reflected cross-site scripting via URL-parameter `?setck=...`. Version 1.20.9 fixes the issue.

Severity

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-02-26
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

9001:copyparty

Packages (OSV)

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-62cr-6wp5-q43h	PyPI	copyparty	<1.20.9	1.20.9
PYSEC-2026-2136	PyPI	copyparty	<1.20.9	1.20.9

References

https://github.com/9001/copyparty/commit/31b2801fd041f803f4a3d5c12c7d7cb5419048bc
https://github.com/9001/copyparty/security/advisories/GHSA-62cr-6wp5-q43h

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