What’s Vulnerable › Vulnerabilities

CVE-2026-59871: node-tar: Process crash via PAX numeric path type confusion

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-07-08 · updated 2026-10-25
• Weakness: CWE-704

Description

node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.18, node-tar coerces all-digit PAX path and linkpath values in src/pax.ts to JavaScript numbers, causing downstream path handling such as normalizeWindowsPath(entry.path).split('/') to throw an uncaught TypeError. This issue is fixed in version 7.5.18.

Affected products

• isaacs node-tar: before 7.5.18 — fixed in 7.5.18
• Npm Tar: before 7.5.18 — fixed in 7.5.18

How to fix

Upgrade to a fixed version: isaacs node-tar 7.5.18; Npm Tar 7.5.18. Check the vendor advisory for mitigations.

References

• https://github.com/isaacs/node-tar/commit/e02a4e9e013c4be95302e2eb2047a942b883c27b
• https://github.com/isaacs/node-tar/releases/tag/v7.5.18
• https://github.com/isaacs/node-tar/security/advisories/GHSA-w8wr-v893-vjvp
• https://github.com/isaacs/node-tar/security/advisories/GHSA-w8wr-v893-vjvp

Get alerted when CVE-2026-59871 or the next vulnerability affects your stack