CVE-2026-59874 | node-tar is a tar archive manipulation library for Node.js. … | CVSS 8.7 HIGH

Description

node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.18, tar.replace accepts a checksum-valid tar header with a negative base-256 encoded entry size, causing the archive scanner to make no progress while repeatedly parsing the same header. This issue is fixed in version 7.5.18.

Metadata

CVE ID: CVE-2026-59874
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-07-07 15:41 UTC
Published: 2026-07-08 15:23 UTC
Last updated: 2026-07-08 15:23 UTC
Primary CWE: CWE-835
CWE-835: Loop with Unreachable Exit Condition ('Infinite Loo…
Vendor / Product: isaacs / node-tar
Sources: cve.org · NVD

Severity & Metrics

8.7 HIGH CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected products (1)

Vendor	Product	Platform	Versions
isaacs	node-tar	—	< 7.5.18

Weakness (CWE)

CWE	Source	Description
CWE-835	cna	CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.7	HIGH	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References (3)

https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w
https://github.com/isaacs/node-tar/commit/9e78bf058b2c22dd4d52e00d8922d5c06fc2f7b5 https://github.com/isaacs/node-tar/commit/9e78bf058b2c22dd4d52e00d8922d5c06fc2f7b5
https://github.com/isaacs/node-tar/releases/tag/v7.5.18 https://github.com/isaacs/node-tar/releases/tag/v7.5.18