CVE-2026-5758 Details
Description
JavaScript is vulnerable to prototype pollution in Mafintosh's protocol-buffers-schema Version 3.6.0, where an attacker may alter the application logic, bypass security checks, cause a DoS or achieve remote code execution.
A prototype pollution vulnerability has been identified in Mafintosh's protocol-buffers-schema version 3.6.0. This issue allows an attacker to manipulate application logic, bypass security measures, cause a denial-of-service, or achieve remote code execution. The vulnerability arises because the parser does not properly sanitize field options in .proto files, enabling the injection of properties into Object.prototype. Once polluted, these properties are inherited by all objects in the Node.js process, potentially leading to various security issues.
Users of protocol-buffers-schema should update to version 3.6.1 or later. If the package is used to parse .proto files from untrusted sources, it's important to audit the application for potential prototype pollution vulnerabilities and consider additional security measures, such as freezing Object.prototype in sensitive contexts.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 15, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
No affected product data is available for this CVE.
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 15, 2026 | CVE Modified | CISA-ADP |
| Apr 15, 2026 | New CVE Received | [email protected] |