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Uncontrolled Recursion

CVE-2026-89418

High
8.7/10

Summary

google-protobuf contains an unbounded recursion when parsing unknown "protobuf" group fields. An attacker can send a small crafted payload of deeply nested "START_GROUP" wire bytes to any Node.js service that calls the generated "deserializeBinary()" API, causing a "RangeError: Maximum call stack size exceeded" and crashing the process. No authentication or prior knowledge of the schema is required. This issue affects versions prior to 4.0.3.

  • LOW
  • NETWORK
  • NONE
  • NONE

CWE-674 - Uncontrolled Recursion

The product does not properly control the amount of recursion which takes place, consuming excessive resources, such as allocated memory or the program stack.

References

Advisory Timeline

  • Published