Magic Wormhole: receive, with --output pointing at an existing directory can be path-traversed

低 3.5CVE-2026-42448 · GHSA-cf92-gfcw-6v53 · PYSEC-2026-2616 · 26/05/2026 公開 · 24/07/2026 更新

要点

CVE-2026-42448 は magic-wormhole に影響する深刻度「低」 (CVSS 3.5) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.20%（全脆弱性の 9.4% より高い）。
対処：0.24.0 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
magic-wormhole PyPI	`≥ 0.23.0, < 0.24.0`	`0.24.0`

概要

Impact

A receiver who specifies "--output <dir>" where that output directory currently exists (as a directory).

Patches

0.24.0 will contain the patch

Workarounds

Ensure local target directories specified by "--output" do not already exist

Resources

Private email and Signal communications from a user. Magic Wormhole thanks @marduc812

NVD の説明

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 <dir>" where that output directory currently exists (as a directory). This vulnerability is fixed in 0.24.0.