Read the docs
TI-2026-22292 Aliases CVE-2026-27948GHSA-62cr-6wp5-q43h

Copyparty vulnerable to eflected cross-site scripting via setck parameter

Priority LOW 27CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00196 9th percentileScored 2026-11-07
Fix Fixed copyparty (9001): 1.20.9copyparty (PyPI): 1.20.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
9001copypartybefore 1.20.91.20.9Patch availableCNA
—copyparty (PyPI)before 1.20.91.20.9Patch availableGHSA-62cr-6wp5-q43h
  • copyparty Vendor9001 Affected before 1.20.9 Fixed in 1.20.9 Patch available CNA
  • copyparty (PyPI) Vendor— Affected before 1.20.9 Fixed in 1.20.9 Patch available GHSA-62cr-6wp5-q43h

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:9001:copyparty:*:*:*:*:*:*:*:*before 1.20.9Vulnerable9001
  • cpe:2.3:a:9001:copyparty:*:*:*:*:*:*:*:* Versions before 1.20.9 Vulnerable ·9001

Remediation

  • Fix · CNA copyparty (9001) Fixed in 1.20.9
  • Fix · GHSA-62cr-6wp5-q43h copyparty (PyPI) Fixed in 1.20.9 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-27948
  2. 2026-10-03 Alias added: GHSA-62cr-6wp5-q43h

References

Patch 1

Advisory 2

Other 2

  • TI-2025-34551 Copyparty is vulnerable to Regex Denial of Service (ReDoS) attacks through "Recent Uploads" page CVSS 3.1HIGH 7.5
  • TI-2023-19082 Path traversal in copyparty CVSS 3.1HIGH 7.5
  • TI-2023-21990 Cross Site Scripting vulnerability in copyparty before 1.9.2 allows a local attacker to… CVSS 3.1HIGH 7.8
  • TI-2023-19881 copyparty vulnerable to reflected cross-site scripting via k304 parameter CVSS 3.1MEDIUM 6.3
  • TI-2025-34228 copyparty has a DOM-Based XSS vulnerability when displaying multimedia metadata CVSS 3.1MEDIUM 6.1
  • TI-2025-20002 copyparty renders unsanitized filenames as HTML when user uploads empty files CVSS 3.1MEDIUM 6.1
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences