wormhole receive, with --output pointing at an existing directory can be path-traversed
Priority LOW 16CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00197 9th percentileScored 2026-11-07
Fix Fixed magic-wormhole (magic-wormhole): 0.24.0magic-wormhole (PyPI): 0.24.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| magic-wormhole | magic-wormhole | before 0.24.0 | 0.24.0 | Patch available | CNA |
| — | magic-wormhole (PyPI) | 0.23.0 to before 0.24.0 | 0.24.0 | Patch available | GHSA-cf92-gfcw-6v53 |
- magic-wormhole Vendormagic-wormhole Affected before 0.24.0 Fixed in 0.24.0 Patch available CNA
- magic-wormhole (PyPI) Vendor— Affected 0.23.0 to before 0.24.0 Fixed in 0.24.0 Patch available GHSA-cf92-gfcw-6v53
Remediation
- Fix · CNA magic-wormhole (magic-wormhole) Fixed in 0.24.0
- Fix · GHSA-cf92-gfcw-6v53 magic-wormhole (PyPI) Fixed in 0.24.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-42448
- 2026-10-03 Alias added: GHSA-cf92-gfcw-6v53
References
Sources
- CVE-2026-42448 · CVE Program
- CVE-2026-42448 · NVD
- FIRST EPSS
- GHSA-cf92-gfcw-6v53 · GitHub Advisory Database · CC BY 4.0
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