What’s Vulnerable › Vulnerabilities

CVE-2026-59873: node-tar: Decompression/parse DoS via unlimited input

• 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-770

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.

Affected products

• isaacs node-tar: before 7.5.19 — fixed in 7.5.19
• Npm Tar: before 7.5.19 — fixed in 7.5.19

How to fix

Upgrade to a fixed version: isaacs node-tar 7.5.19; Npm Tar 7.5.19. Check the vendor advisory for mitigations.

References

• https://github.com/isaacs/node-tar/commit/2812e9338665659b183aa7226518c307044957d3
• https://github.com/isaacs/node-tar/releases/tag/v7.5.19
• https://github.com/isaacs/node-tar/security/advisories/GHSA-23hp-3jrh-7fpw
• https://github.com/isaacs/node-tar/security/advisories/GHSA-23hp-3jrh-7fpw

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