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TI-2026-23798 Aliases CVE-2026-30974GHSA-m6hv-x64c-27mm

Copyparty volflag `nohtml` did not block javascript in svg files

Priority LOW 25CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
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. Prior to v1.20.11., the nohtml config option, intended to prevent execution of JavaScript in user-uploaded HTML files, did not apply to SVG images. A user with write-permission could upload an SVG containing embedded JavaScript, which would execute in the context of whichever user opens it. This has been fixed in v1.20.11.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00385 32nd percentileScored 2026-11-07
Fix Fixed copyparty (9001): 1.20.11copyparty (PyPI): 1.20.11

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 1.20.111.20.11Patch availableCNA
—copyparty (PyPI)before 1.20.111.20.11Patch availableGHSA-m6hv-x64c-27mm
  • copyparty Vendor9001 Affected before 1.20.11 Fixed in 1.20.11 Patch available CNA
  • copyparty (PyPI) Vendor— Affected before 1.20.11 Fixed in 1.20.11 Patch available GHSA-m6hv-x64c-27mm

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:9001:copyparty:*:*:*:*:*:*:*:*before 1.20.11Vulnerable9001
  • cpe:2.3:a:9001:copyparty:*:*:*:*:*:*:*:* Versions before 1.20.11 Vulnerable ·9001

Remediation

  • Fix · CNA copyparty (9001) Fixed in 1.20.11
  • Fix · GHSA-m6hv-x64c-27mm copyparty (PyPI) Fixed in 1.20.11 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-30974
  2. 2026-10-03 Alias added: GHSA-m6hv-x64c-27mm

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