GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

BREW-COPYPARTY-CVE-2025-54423 (CVE-2025-54423)

Vulnerability from osv_homebrew – Published: 2026-08-13 16:41 – Updated: 2026-09-09 23:48 – Source website
VLAI
Summary
copyparty has a DOM-Based XSS vulnerability when displaying multimedia metadata
Details

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.

Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "upstream_fixed_in": "1.18.5"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "copyparty",
        "purl": "pkg:brew/copyparty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.20.20"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "git",
    "upstream_evidence": [
      {
        "ecosystem": "GIT",
        "key": "https://github.com/9001/copyparty",
        "name": "https://github.com/9001/copyparty",
        "strategy": "git",
        "subject_version": "1.20.23"
      },
      {
        "ecosystem": "PyPI",
        "key": "pkg:pypi/copyparty@1.20.23",
        "name": "copyparty",
        "strategy": "registry",
        "subject_version": "1.20.23"
      }
    ]
  },
  "details": "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\u0027s browser due to improper sanitization of multimedia tags in music files, including m3u files. This is fixed in version 1.18.5.",
  "id": "BREW-copyparty-CVE-2025-54423",
  "modified": "2026-09-09T23:48:44Z",
  "published": "2026-08-13T16:41:06Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/9001/copyparty/releases/tag/v1.18.5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/9001/copyparty/security/advisories/GHSA-9q4r-x2hj-jmvr"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/54xxx/CVE-2025-54423.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54423"
    },
    {
      "type": "FIX",
      "url": "https://github.com/9001/copyparty/commit/895880aeb0be0813ddf732487596633f8f9fc3a6"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "copyparty has a DOM-Based XSS vulnerability when displaying multimedia metadata",
  "upstream": [
    "CVE-2025-54423",
    "GHSA-9q4r-x2hj-jmvr",
    "PYSEC-2026-1277"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.