Home/CVE/copyparty is a portable file server. In versions up to and including versions 1.18.4, an unauthenticated attacker is abl
CVE

CVE-2025-54423

copyparty is a portable file server. In versions up to and including versions 1.18.4, an unauthenticated attacker is abl

copyparty is a portable file server. In versions up to and including versions 1.18.4, an unauthenticated attacker is able to execute arbitrary JavaScript code in a victim's browser due to improper sanitization of multimedia tags in music files, including m3u files. This is fixed in version 1.18.5.

MEDIUM · CVSS 5.4 EPSS 0.00203
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

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

Affected Products & Versions

1
9001 copyparty< 1.18.5
▤

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 1.18.5
⚠

Public Exploits & PoCs

1
pocgithub.com · GHSA-9q4r-x2hj-jmvrgithub.com
▣

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 NVD28 Jul 2025 · 08:17 PM
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
poc
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/895880aeb0be0813ddf732487596633f8f9fc3a6Patch
https://github.com/9001/copyparty/releases/tag/v1.18.5Release Notes
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