CVE-2026-0994

Publish date: March 17, 2026
Severity
High
CVSS score
8.2
Package
protobuf
Affected versions
>= 3.21.12-11, < 3.21.12-11+e2

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.