XSS in 9001 Copyparty
CVE-2025-54423
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 f…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (42.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
Affected products
- 9001 Copyparty — versions < 1.18.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- https://github.com/9001/copyparty/security/advisories/GHSA-9q4r-x2hj-jmvr (x_refsource_CONFIRM)
- https://github.com/9001/copyparty/commit/895880aeb0be0813ddf732487596633f8f9fc3a6 (x_refsource_MISC)
- https://github.com/9001/copyparty/releases/tag/v1.18.5 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-54423?
- CVE-2025-54423 is a medium-severity vulnerability in 9001 Copyparty, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-07-28.
- How severe is CVE-2025-54423?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2025-54423 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.