BREW-MAGIC-WORMHOLE-CVE-… (CVE-2026-42448)

Vulnerability from osv_homebrew – Published: 2026-08-13 17:10 – Updated: 2026-10-07 23:32 – Source website
VLAI
Summary
wormhole receive, with --output pointing at an existing directory can be path-traversed
Details

Magic Wormhole makes it possible to get arbitrary-sized files and directories from one computer to another. Prior to 0.24.0, there is a path traversal when a receiver who specifies "--output " where that output directory currently exists (as a directory). This vulnerability is fixed in 0.24.0.

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "upstream_fixed_in": "0.24.0"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "magic-wormhole",
        "purl": "pkg:brew/magic-wormhole"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.23.0"
            },
            {
              "fixed": "0.24.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "git",
    "upstream_evidence": [
      {
        "ecosystem": "GIT",
        "key": "https://github.com/magic-wormhole/magic-wormhole",
        "name": "https://github.com/magic-wormhole/magic-wormhole",
        "strategy": "git",
        "subject_version": "0.24.0"
      },
      {
        "ecosystem": "PyPI",
        "key": "pkg:pypi/magic-wormhole@0.24.0",
        "name": "magic-wormhole",
        "strategy": "registry",
        "subject_version": "0.24.0"
      }
    ]
  },
  "details": "Magic Wormhole makes it possible to get arbitrary-sized files and directories from one computer to another. Prior to 0.24.0, there is a path traversal when a receiver who specifies \"--output \u003cdir\u003e\" where that output directory currently exists (as a directory). This vulnerability is fixed in 0.24.0.",
  "id": "BREW-magic-wormhole-CVE-2026-42448",
  "modified": "2026-10-07T23:32:16Z",
  "published": "2026-08-13T17:10:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42448.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/magic-wormhole/magic-wormhole/security/advisories/GHSA-cf92-gfcw-6v53"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42448"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "wormhole receive, with --output pointing at an existing directory can be path-traversed",
  "upstream": [
    "CVE-2026-42448",
    "GHSA-cf92-gfcw-6v53",
    "PYSEC-2026-2616"
  ]
}



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