CVE-2025-64118

node-tar vulnerable to race condition leading to uninitialized memory exposure

Published Oct 30, 2025 CVSS 4.0 · 6.1 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-29xp-372q-xqph node-tar has a race condition leading to uninitialized memory exposure
History
Type Values Removed Values Added
First Time appeared Node-tar Project
Node-tar Project node-tar
Vendors & Products Node-tar Project
Node-tar Project node-tar
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title node-tar vulnerable to race condition leading to uninitialized memory exposure
Weaknesses CWE-362
CWE-367
References
Metrics cvssV4_0

{'score': 6.1, 'vector': 'CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:L/VA:L/SC:H/SI:H/SA:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Oct 30, 2025, 6:42 PM
Reserved
Oct 27, 2025, 3:26 PM
Status
Deferred
Published
Oct 30, 2025, 6:15 PM
Modified
Oct 7, 2026, 10:10 PM