CVE-2026-24842 — node-tar Vulnerable to Arbitrary File Creation/Overwrite via Hardlink Path Traversal

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
isaacs / node-tar	affected < 7.5.7

CWE

CWE-22, CWE-59

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

redhat-SADP

A flaw was found in node-tar, a Node.js module for handling TAR archives. This vulnerability allows a remote attacker to bypass path traversal protections by crafting a malicious TAR archive. The security check for hardlink entries uses different path resolution logic than the actual hardlink creation, enabling the attacker to create hardlinks to arbitrary files outside the intended extraction directory. This could lead to unauthorized information disclosure or further system compromise.