vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2025-64118

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

MEDIUM
6.1
CVSS Score
Published: October 30, 2025 at 05:50 PM UTC
Updated: October 7, 2026 at 10:10 PM UTC
1 product affected across 1 vendorTar

Using node-tar by isaacs?

Get instant alerts when new vulnerabilities affect node-tar - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM6.1
Exploit prediction
EPSS 0.1%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

x_refsource_CONFIRM
Source: cverecord
https://github.com/isaacs/node-tar/security/advisories/GHSA-29xp-372q-xqph
x_refsource_MISC
Source: cverecord
https://github.com/isaacs/node-tar/issues/445
x_refsource_MISC
Source: cverecord
https://github.com/isaacs/node-tar/pull/446
x_refsource_MISC
Source: cverecord
https://github.com/isaacs/node-tar/commit/5330eb04bc43014f216e5c271b40d5c00d45224d

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-362CWE-367

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card