CVE-2026-42448
Magic Wormhole: receive, with --output pointing at an existing directory can be path-traversed
3.5
LOW
CVSS 3.1
EPSS 0.04%
Description
### 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
How to fix CVE-2026-42448
To remediate CVE-2026-42448, upgrade the affected package to a fixed version below.
- —upgrade to 0.24.0 or later
Is CVE-2026-42448 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 0.23.0, < 0.24.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW3.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N |