{"id":"CVE-2026-42448","aliases":["GHSA-cf92-gfcw-6v53","PYSEC-2026-2616"],"url":"https://o3.security/vulnerability/CVE-2026-42448","summary":"wormhole receive, with --output pointing at an existing directory can be path-traversed","details":"### Impact\nA receiver who specifies \"--output <dir>\" where that output directory currently exists (as a directory).\n\n### Patches\n0.24.0 will contain the patch\n\n### Workarounds\nEnsure local target directories specified by \"--output\" do not already exist\n\n### Resources\nPrivate email and Signal communications from a user.\nMagic Wormhole thanks  @marduc812","published":"2026-05-26T17:57:20.946Z","modified":"2026-08-12T03:51:30.903914625Z","cvss":{"score":3.5,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N"},"epss":{"score":0.00197,"percentile":0.09653,"asOf":"2026-08-14"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"magic-wormhole","fixedVersion":"0.24.0"}],"fix":null,"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"},{"type":"PACKAGE","url":"https://github.com/magic-wormhole/magic-wormhole"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:30.903914625Z"}}