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Vulnerability record · CVE-2026-59871 · published 8 July 2026

CVE-2026-59871: Isaacs tar vulnerability

Isaacs · Tar

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.

7.5 CVSS 3.1 High EPSS 0.64% · top 51.2% CWE-704 · CWE-704
7.5CVSS 3.1 base score
0.64%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
10 Jul 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/isaacs/node-tar/commit/e02a4e9e013c4be95302e2eb2047a942b883c27b Patch
https://github.com/isaacs/node-tar/releases/tag/v7.5.18 Release Notes
https://github.com/isaacs/node-tar/security/advisories/GHSA-w8wr-v893-vjvp ExploitVendor Advisory
https://github.com/isaacs/node-tar/security/advisories/GHSA-w8wr-v893-vjvp ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.2CVE-2026-59873Isaacs tar allocation without limits vulnerabilitynode-tar is a tar archive manipulation library for Node.js. Prior to 7.5.19, node-tar does not enforce hard upper bounds on total decompressed data, …EPSS 0.64%8.7CVE-2026-59874Isaacs tar vulnerabilitynode-tar is a tar archive manipulation library for Node.js. Prior to 7.5.18, tar.replace accepts a checksum-valid tar header with a negative base-256…EPSS 0.64%8.2CVE-2026-31802Isaacs tar path traversal vulnerabilitynode-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extrac…EPSS 0.18%8.2CVE-2026-29786Isaacs tar path traversal vulnerabilitynode-tar is a full-featured Tar for Node.js. Prior to version 7.5.10, tar can be tricked into creating a hardlink that points outside the extraction …EPSS 0.39%8.2CVE-2026-24842Isaacs tar path traversal vulnerabilitynode-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 res…EPSS 0.62%8.2CVE-2026-23745Isaacs tar path traversal vulnerabilitynode-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preser…EPSS 0.38%7.5CVE-2018-20834Isaacs tar link following vulnerabilityA vulnerability was found in node-tar before version 4.4.2 (excluding version 2.2.2). An Arbitrary File Overwrite issue exists when extracting a tarb…EPSS 3.1%7.1CVE-2026-26960Isaacs tar path traversal vulnerabilitynode-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 hard…EPSS 0.20%

Source: NIST National Vulnerability Database (record CVE-2026-59871), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.