CVE-2025-54423

copyparty has a DOM-Based XSS vulnerability when displaying multimedia metadata

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.

Affected

9001 · copyparty

CVSS v3.1 NVD

6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 GITHUB

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

EPSS

0.44% chance of exploitation in the next 30 days, 37th percentile

Published

2025-07-28

Proof-of-concept exploits (2)

• 9001/copyparty/security/advisories/GHSA-9q4r-x2hj-jmvr
• advisories/GHSA-9q4r-x2hj-jmvr

Security advisories

• 9001/copyparty/commit/895880aeb0be0813ddf732487596633f8f9fc3a6

References

• CVE Record
• NVD entry