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.

INFO

Published Date :

2026-01-23T14:55:16.876Z

Last Modified :

2026-01-30T14:28:11.435Z

Source :

Google
AFFECTED PRODUCTS

The following products are affected by CVE-2026-0994 vulnerability.

Vendors Products
Google
  • Protobuf
  • Protobuf-python
Protobuf
  • Protobuf
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-0994.

URL Resource
https://github.com/protocolbuffers/protobuf/pull/25239 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-0994 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-0994 cve-icon
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CVSS Vulnerability Scoring System

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Detailed values of each vector for above chart.
Attack Vector
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Privileges Required
User Interaction
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Integrity Impact
Availability Impact