Medium severity · published Mar 7, 2026
CVE-2026-29786
node-tar: Hardlink Path Traversal via Drive-Relative Linkpath
6.3
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NO
node-tar · isaacs
< 7.5.10 · source: vendor
TA
Tar · Isaacs
before 7.5.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-29786
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-29786
Patch
https://github.com/isaacs/node-tar/commit/7bc755dd85e623c0279e08eb3784909e6d7e4b9f
Exploit
https://github.com/isaacs/node-tar/security/advisories/GHSA-qffp-2rhf-9h96
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-29786
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2445476
security.access.redhat.com
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29786.json
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