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Uncontrolled Recursion

CVE-2026-0994

High
8.2/10

Summary

A Denial-of-Service (DoS) vulnerability exists in "google.protobuf.json_format.ParseDict()" in Python, where the "max_recursion_depth" limit can be bypassed when parsing nested "google.protobuf.Any messages". Affected versions are through 6.33.4. Due to missing recursion depth accounting inside the internal Any-handling logic, an attacker can supply deeply nested Any structures that bypass the intended recursion limit, eventually exhausting Python's recursion stack and causing a RecursionError.

  • 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