GHSA-7gcm-g887-7qv7: Pip/protobuf vulnerability

Published Jan 23, 2026
·
Updated

A denial-of-service (DoS) vulnerability exists in google.protobuf.jsonformat.ParseDict() in Python, where the maxrecursiondepth 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.

Affected Software

1 affected componentFixes available
pip/protobuf<=6.33.4
6.33.5

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade pip/protobuf to a version that resolves this vulnerability.

    Fixed in 6.33.5

Event History

Jan 23, 2026
Advisory Published
via GitHub·03:31 PM
Data Sourced
via GitHub·03:31 PM
DescriptionWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of GHSA-7gcm-g887-7qv7?

The GHSA-7gcm-g887-7qv7 vulnerability is classified as a denial-of-service (DoS) issue.

2

How do I fix GHSA-7gcm-g887-7qv7?

To fix GHSA-7gcm-g887-7qv7, upgrade the protobuf package to a version higher than 6.33.4 where the issue is addressed.

3

Who is affected by GHSA-7gcm-g887-7qv7?

The vulnerability GHSA-7gcm-g887-7qv7 affects users of the protobuf package version 6.33.4 and below.

4

What causes GHSA-7gcm-g887-7qv7?

GHSA-7gcm-g887-7qv7 is caused by missing recursion depth accounting in the google.protobuf.json_format.ParseDict() function when handling nested google.protobuf.Any messages.

5

Can GHSA-7gcm-g887-7qv7 be exploited remotely?

Yes, GHSA-7gcm-g887-7qv7 can be exploited remotely by attackers to achieve denial of service.

Contact

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