CVE-2026-30974
March 10, 2026
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.
Affected Packages
copyparty (CONDA):
Affected version(s) >=1.18.5 <1.20.11Fix Suggestion:
Update to version 1.20.11https://github.com/9001/copyparty.git (GITHUB):
Affected version(s) >=v0.2.3 <v1.20.11Fix Suggestion:
Update to version v1.20.11copyparty (PYTHON):
Affected version(s) >=0.2.3 <1.20.11Fix Suggestion:
Update to version 1.20.11Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
EPSS
Base Score:
0.03
