CVE-2026-29786
Medium
Description
node-tar is a full-featured Tar for Node.js. Prior to version 7.5.10, tar can be tricked into creating a hardlink that points outside the extraction directory by using a drive-relative link target such as C:../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This issue has been patched in version 7.5.10.
SeverityMedium
CVSS6.3
Exploit probability—
ProductIsaacs Tar
PublishedMar 7, 2026
First seenMar 7, 2026
Weakness typeCWE-22Path traversalCWE-59Improper link resolution
How to fix
Update
- isaacs tar7.5.10 or later
- tar7.5.10 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| isaacs tar | v < 7.5.10 | 7.5.10 |
| tarnpm | v < 7.5.10 | 7.5.10 |
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