Vulnerability · Published May 26, 2026 · Assigned by GitHub_M
CVE-2026-42448wormhole receive, with --output pointing at an existing directory can be path-traversed
Low 3.5
In plain English
A low-severity path traversal in magic-wormhole from magic-wormhole. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.5Low
Exploit odds (30 days)0.2%top 90.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | magic-wormhole | 0.24.0 | GHSA-cf92-gfcw-6v53 |
| PyPI | magic-wormhole | 0.24.0 | PYSEC-2026-2616 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| magic-wormhole | magic-wormhole | < 0.24.0 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N