#VU121666 Prototype pollution in js-yaml (npm) - CVE-2025-64718

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Main Vulnerability Database Vulnerabilities #VU121666

#VU121666 Prototype pollution in js-yaml (npm) - CVE-2025-64718

Published: January 19, 2026


Vulnerability identifier: #VU121666
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-64718
CWE-ID: CWE-1321
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
js-yaml (npm)
Software vendor:
npm Inc.

Description

The vulnerability allows a remote attacker to execute arbitrary JavaScript code.

The vulnerability exists due to improper input validation. A remote attacker can pass specially crafted input to the application and perform prototype pollution attacks.


Remediation

Install update from vendor's website.

External links