Home/CVE/Copyparty is a portable file server. In versions prior to 1.20.9, an XSS allows for reflected cross-site scripting via U
CVE

CVE-2026-27948

Copyparty is a portable file server. In versions prior to 1.20.9, an XSS allows for reflected cross-site scripting via U

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.

MEDIUM · CVSS 5.4 EPSS 0.00041
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

1
9001 copyparty< 1.20.9
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
PyPI copyparty MODERATE fixed in 1.20.9
▣

Scoring & Timeline

5.4
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 Feb 2026 · 02:16 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/9001/copyparty/commit/31b2801fd041f803f4a3d5c12c7d7cb5419048bcPatch
https://github.com/9001/copyparty/security/advisories/GHSA-62cr-6wp5-q43hVendor Advisory
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