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Vulnerability record · CVE-2026-59873 · published 8 July 2026

CVE-2026-59873: Isaacs tar allocation without limits vulnerability

Isaacs · Tar

node-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, entry counts, or decompression ratio in extraction and parsing paths such as src/extract.ts, allowing a small crafted gzip bomb to exhaust disk space and CPU. This issue is fixed in version 7.5.19.

9.2 CVSS 4.0 Critical EPSS 0.64% · top 51.2% CWE-770 · Allocation without limits
9.2CVSS 4.0 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 7.5.19, node-tar does not enforce hard upper bounds on total decompressed data, entry counts, or decompression ratio in extraction and parsing paths such as src/extract.ts, allowing a small crafted gzip bomb to exhaust disk space and CPU. This issue is fixed in version 7.5.19.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

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

References

LinkTags
https://github.com/isaacs/node-tar/commit/2812e9338665659b183aa7226518c307044957d3 Patch
https://github.com/isaacs/node-tar/releases/tag/v7.5.19 Release Notes
https://github.com/isaacs/node-tar/security/advisories/GHSA-23hp-3jrh-7fpw ExploitVendor Advisory
https://github.com/isaacs/node-tar/security/advisories/GHSA-23hp-3jrh-7fpw ExploitVendor Advisory

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2026-59873), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.