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CVE-2026-0994
Good to know:
Date: January 23, 2026
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.
Severity Score
Related Resources (7)
Severity Score
Weakness Type (CWE)
Uncontrolled Recursion
CWE-674Top Fix
Upgrade Version
Upgrade to version protobuf - 6.33.5;protobuf - 5.29.6;protobuf - 6.33.5;https://github.com/protocolbuffers/protobuf.git - v33.5;https://github.com/protocolbuffers/protobuf.git - v5.29.6
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | NONE |
| Scope (S): | CHANGED |
| Confidentiality (C): | NONE |
| Integrity (I): | NONE |
| Availability (A): | HIGH |