Vulnerability in Isaacs Node-Tar
CVE-2026-59871
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.
EPSS: 0.004 (34.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Isaacs Node-tar — versions < 7.5.18
- Isaacs Tar
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-59871?
- CVE-2026-59871 is a medium-severity vulnerability in Isaacs Node-Tar, classified under Incorrect Type Conversion or Cast. CVSS score: 5.3/10. Published 2026-07-08.
- How severe is CVE-2026-59871?
- Medium severity. CVSS v3 base score is 5.3 out of 10.