CVE-2026-42448
wormhole receive, with --output pointing at an existing directory can be path-traversed
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
wormhole receive, with --output pointing at an existing directory can be path-traversed
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.
- Record
CVE-2026-42448- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
EUVDEUVD-2026-31947
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.
- Record
EUVD-2026-31947- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-cf92-gfcw-6v53
Magic Wormhole: receive, with --output pointing at an existing directory can be path-traversed
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
- Record
GHSA-cf92-gfcw-6v53- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-42448- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
OSV
wormhole receive, with --output pointing at an existing directory can be path-traversed
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.
- Record
CVE-2026-42448- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
OSVGHSA-cf92-gfcw-6v53
Magic Wormhole: receive, with --output pointing at an existing directory can be path-traversed
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
- Record
GHSA-cf92-gfcw-6v53- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
OSVPYSEC-2026-2616
Magic Wormhole: receive, with --output pointing at an existing directory can be path-traversed
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
- Record
PYSEC-2026-2616- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
OSVopenSUSE-SU-2026:11370-1 No score
python-magic-wormhole-bash-completion-0.24.0-1.1 on GA media
These are all security issues fixed in the python-magic-wormhole-bash-completion-0.24.0-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:11370-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
magic-wormholePyPI |
0.23.0 to 0.23.0 | 0.24.0 |
magic-wormholePyPI |
0.23.0 up to 0.24.0 | 0.24.0 |
python-magic-wormholeopenSUSE:Tumbleweed |
before 0.24.0-1.1 | 0.24.0-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-42448 is a low vulnerability (CVSS 3.5) in Magic-wormhole, published May 6, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.20%, the 9th percentile. Fixed in magic-wormhole 0.24.0.
References
github.com/magic-wormhole/magic-wormhole/security/advisories/GHSA-cf92-gfcw-6v53
nvd.nist.gov/vuln/detail/CVE-2026-42448
pypi.org/project/magic-wormhole
suse.com/security/cve/CVE-2026-42448