CVE-2026-24842
High
Description
node-tar,a Tar for Node.js, contains a vulnerability in versions prior to 7.5.7 where the security check for hardlink entries uses different path resolution semantics than the actual hardlink creation logic. This mismatch allows an attacker to craft a malicious TAR archive that bypasses path traversal protections and creates hardlinks to arbitrary files outside the extraction directory. Version 7.5.7 contains a fix for the issue.
SeverityHigh
CVSS8.2
Exploit probability—
ProductIsaacs Tar
PublishedJan 28, 2026
First seenJan 28, 2026
Weakness typeCWE-22Path traversalCWE-59Improper link resolution
How to fix
Update
- isaacs tar7.5.7 or later
- tar7.5.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| isaacs tar | v < 7.5.7 | 7.5.7 |
| tarnpm | v < 7.5.7 | 7.5.7 |
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