SB2025121631 - Prototype pollution in Happy DOM
Published: December 16, 2025
Security Bulletin ID
SB2025121631
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Prototype pollution (CVE-ID: CVE-2025-62410)
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, bypass the --disallow-code-generation-from-strings option and perform prototype pollution, which can result in information disclosure or data manipulation.
Note, the vulnerability exists due to incomplete fix for #VU120001 (CVE-2025-61927).
Remediation
Install update from vendor's website.