CVE-2024-42471: actions toolkit Path Traversal

Vulnerability summary

CVE-2024-42471 is a high (CVSS 7.5) Path Traversal vulnerability in actions toolkit. EPSS estimates a 3.22% chance of exploitation in the next 30 days, higher than 88% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 02-09-2024
   PublishedVulnerability first disclosed.
2. 27-08-2025
   Last modifiedVulnerability information updated.

Description

actions/artifact is the GitHub ToolKit for developing GitHub Actions. Versions of `actions/artifact` on the 2.x branch before 2.1.2 are vulnerable to arbitrary file write when using `downloadArtifactInternal`, `downloadArtifactPublic`, or `streamExtractExternal` for extracting a specifically crafted artifact that contains path traversal filenames. Users are advised to upgrade to version 2.1.2 or higher. There are no known workarounds for this issue.

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.