🛡️ CVE-2026-59874 on Ubuntu — node-tar

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

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.

Distribution advisory

This page covers CVE-2026-59874 as tracked by Ubuntu, for the package node-tar. No fixed version has been recorded for this distribution yet.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

UBUNTU-CVE-2026-59874 is classified as CWE-835: Infinite Loop. A loop condition can never become false for some inputs, hanging the process.

Affected software

UBUNTU-CVE-2026-59874 is recorded against 1 package.

node-tar

Timeline and source

Published on 8 July 2026 and last revised on 15 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
github.com (Report)

Details

Severity Unknown

CVSS Score N/A

CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2026-07-08

Updated 2026-08-11

Modified 2026-07-15

Fix URL N/A

Affected Packages

Software	From version	Fixed in
node-tar	—	—

References

REPORT https://ubuntu.com/security/CVE-2026-59874

REPORT https://www.cve.org/CVERecord?id=CVE-2026-59874

REPORT https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w

🔗 NVD 🔗 Mitre

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