node-tar v<7.5.11: drive-relative symlink overwrite
CVE-2026-31802 Published on March 9, 2026
node-tar Symlink Path Traversal via Drive-Relative Linkpath
node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.
Weakness Type
What is a Directory traversal Vulnerability?
The software 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 software 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.
CVE-2026-31802 has been classified to as a Directory traversal vulnerability or weakness.
Affected Versions
isaacs node-tar Version < 7.5.11 is affected by CVE-2026-31802Vulnerable Packages
The following package name and versions may be associated with CVE-2026-31802
| Package Manager | Vulnerable Package | Versions | Fixed In |
|---|---|---|---|
| npm | tar | <= 7.5.10 | 7.5.11 |
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.