CVE-2026-42448

wormhole receive, with --output pointing at an existing directory can be path-traversed

LOW
3.5
CVSS Score
Published: May 26, 2026 at 05:57 PM UTC
Updated: July 24, 2026 at 11:23 AM UTC
1 product affected across 1 vendorMagic Wormhole

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Severity
LOW3.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.24.0
Affected range stops below 0.24.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.5LOWGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-22

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