CVE-2026-31802
MEDIUM5.5EPSS 0.01%node-tar Symlink Path Traversal via Drive-Relative Linkpath
Published: 3/10/2026Modified: 4/29/2026
Description
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.
Affected packages (2)
- Debian/node-tarfrom 0, < 6.0.5+ds1+~cs11.3.9-1+deb11u3
- npm/tarfrom 0, < 7.5.11
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N |
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
References (5)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-31802
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2026-31802
- PATCHhttps://github.com/isaacs/node-tar
- WEBhttps://github.com/isaacs/node-tar/commit/f48b5fa3b7985ddab96dc0f2125a4ffc9911b6ad
- WEBhttps://github.com/isaacs/node-tar/security/advisories/GHSA-9ppj-qmqm-q256