CVE-2025-54423
published 2025-07-28CVE-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…
PriorityP431medium6.1CVSS 3.1
AVNACLPRNUIRSCCLILAN
EPSS
0.40%
31.3th percentile
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
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| 9001 | copyparty | < 1.18.5 | 1.18.5 |
| 9001 | copyparty | >= 0 < 1.18.5 | 1.18.5 |
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GHSA
copyparty has DOM-Based XSS vulnerability when displaying multimedia metadata
ghsa·2025-07-28
CVE-2025-54423 [MEDIUM] CWE-79 copyparty has DOM-Based XSS vulnerability when displaying multimedia metadata
copyparty has DOM-Based XSS vulnerability when displaying multimedia metadata
### Summary
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.
### Details
Multimedia metadata is rendered in the web-app without sanitization. This can be exploited in two ways:
* a user which has the necessary permission for uploading files can upload a song with an artist-name such as ``
* an unauthenticated user can trick another user into clicking a malicious URL, performing this same exploit using an externally-hosted m3u file
The CVE score and PoC is based on the m3u approach, which results in a higher severity.
### PoC
1. Create a file named `song.m3u` with the followin
OSV
copyparty has DOM-Based XSS vulnerability when displaying multimedia metadata
osv·2025-07-28
CVE-2025-54423 [MEDIUM] copyparty has DOM-Based XSS vulnerability when displaying multimedia metadata
copyparty has DOM-Based XSS vulnerability when displaying multimedia metadata
### Summary
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.
### Details
Multimedia metadata is rendered in the web-app without sanitization. This can be exploited in two ways:
* a user which has the necessary permission for uploading files can upload a song with an artist-name such as ``
* an unauthenticated user can trick another user into clicking a malicious URL, performing this same exploit using an externally-hosted m3u file
The CVE score and PoC is based on the m3u approach, which results in a higher severity.
### PoC
1. Create a file named `song.m3u` with the followin
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-07-28
Published