CVE-2026-29786
node-tar: Hardlink Path Traversal via Drive-Relative Linkpath
- State
- Published
- Severity
- 8.2 High
- Published
- Mar 7, 2026
- Updated
- Sep 1, 2026
- Reserved
- Mar 4, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.2 High | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L | GitHub_M |
| 3.1 | 8.6 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
node-tarisaacs |
|
References
- https://github.com/isaacs/node-tar/security/advisories/GHSA-qffp-2rhf-9h96
- https://github.com/isaacs/node-tar/commit/7bc755dd85e623c0279e08eb3784909e6d7e4b9f
- https://access.redhat.com/security/cve/CVE-2026-29786vdb-entry
- RHBZ#2445476issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29786.json
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