Vulnerability Description
node-tar is a full-featured Tar for Node.js. When using default options in versions 7.5.7 and below, an attacker-controlled archive can create a hardlink inside the extraction directory that points to a file outside the extraction root, enabling arbitrary file read and write as the extracting user. Severity is high because the primitive bypasses path protections and turns archive extraction into a direct filesystem access primitive. This issue has been fixed in version 7.5.8.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Isaacs | Tar | < 7.5.8 |
Related Weaknesses (CWE)
References
- https://github.com/isaacs/node-tar/commit/2cb1120bcefe28d7ecc719b41441ade59c52e3Patch
- https://github.com/isaacs/node-tar/commit/d18e4e1f846f4ddddc153b0f536a19c050e749Patch
- https://github.com/isaacs/node-tar/security/advisories/GHSA-83g3-92jg-28cxExploitVendor Advisory
FAQ
What is CVE-2026-26960?
CVE-2026-26960 is a vulnerability with a CVSS score of 7.1 (HIGH). node-tar is a full-featured Tar for Node.js. When using default options in versions 7.5.7 and below, an attacker-controlled archive can create a hardlink inside the extraction directory that points to...
How severe is CVE-2026-26960?
CVE-2026-26960 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-26960?
Check the references section above for vendor advisories and patch information. Affected products include: Isaacs Tar.