Medium, CVSS 6.5npmAmendedPublished
Mafintosh's protocol-buffers-schema is vulnerable to prototype pollution
CVE-2026-5758 · GHSA-j452-xhg8-qg39
- Affected
- npm protocol-buffers-schema < 3.6.1
- Fixed in
- 3.6.1· Vendor fix available
- Issue
- 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.
Recommended action: Upgrade to 3.6.1 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.