CVE-2025-64118: Isaacs Node-Tar

Medium severity, CVSS 6.1. EPSS: 0.1% chance of exploitation in the next 30 days.

node-tar is a Tar for Node.js. In 7.5.1, using .t (aka .list) with { sync: true } to read tar entry contents returns uninitialized memory contents if tar file was changed on disk to a smaller size while being read. This vulnerability is fixed in 7.5.2.

Affected products

• Isaacs Node-Tar: version 7.5.1 only

Published 2025-10-30. Last modified 2026-10-07.