CVE-2026-5758

Summary

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.

Affected Software

Weaknesses

• CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/mafintosh/protocol-buffers-schema/pull/70
• https://morielharush.github.io/2026/04/12/cve-2026-5758-protocol-buffers-schema-prototype-pollution/

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