VULNERABILITY INTELLIGENCE

CVE-2026-0994

CVSS score7.5 HIGH
EPSS probability0.71%
CISA KEVNot currently listed
Published2026-01-23
Last modified2026-09-01
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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. 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.

Weakness classification

  • cve-coordination@google.com: CWE-674
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-674

Primary references