isaacs node-tar up to 7.5.18 Decompression src/extract.ts memory corruption

Summaryinfo

A vulnerability classified as problematic was found in isaacs node-tar up to 7.5.18. This issue affects some unknown processing of the file src/extract.ts of the component Decompression. The manipulation results in memory corruption. This vulnerability was named CVE-2026-59873. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in isaacs node-tar up to 7.5.18. It has been classified as problematic. Affected is an unknown function of the file src/extract.ts of the component Decompression. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-59873 since 07/07/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Upgrading to version 7.5.19 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• isaacs

Name

• node-tar

Version

• 7.5.0
• 7.5.1
• 7.5.2
• 7.5.3
• 7.5.4
• 7.5.5
• 7.5.6
• 7.5.7
• 7.5.8
• 7.5.9
• 7.5.10
• 7.5.11
• 7.5.12
• 7.5.13
• 7.5.14
• 7.5.15
• 7.5.16
• 7.5.17
• 7.5.18

Website

• Product: https://github.com/isaacs/node-tar/

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Once again VulDB remains the best source for vulnerability data.

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