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CVE-2025-54423

22
FAUCET Score

CVE-2025-54423 is a medium-severity cross-site scripting (XSS) vulnerability affecting copyparty versions up to and including 1.18.4. An unauthenticated attacker can execute arbitrary JavaScript in a victim's browser by exploiting improper sanitization of multimedia tags within music files, such as m3u files. The CVSS score is 6.1, indicating a network-based attack with low complexity, requiring user interaction, and leading to low impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.18.5CPE matchmatch criteria
cpe:2.3:a:9001:copyparty:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 33rd percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: copypartyFixed in: 1.18.5

Vendor Advisories (1)

pipGHSA-9q4r-x2hj-jmvrmedium

copyparty has DOM-Based XSS vulnerability when displaying multimedia metadata

Jul 28, 2025

References

github.com / 9001/copyparty/commit/895880aeb0be0813ddf732487596633f8f9fc3a6
Patch
github.com / 9001/copyparty/releases/tag/v1.18.5
Release Notes
github.com / 9001/copyparty/security/advisories/GHSA-9q4r-x2hj-jmvr
ExploitVendor Advisory