GHSA-7gcm-g887-7qv7

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    GHSA-7gcm-g887-7qv7

    Published: 23 Jan 2026Last Modified: 10 Sept 2026

    Summary: protobuf affected by a JSON recursion depth bypass

    Details: 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.

    References: https://nvd.nist.gov/vuln/detail/CVE-2026-0994, https://github.com/protocolbuffers/protobuf/issues/25070, https://github.com/protocolbuffers/protobuf/pull/25239, https://github.com/protocolbuffers/protobuf/commit/5ebddcb1bcbe51d1fe323baa145e85f4f23128cf, https://github.com/protocolbuffers/protobuf/commit/d2b001626d137c62dfee6c88c87324102531868b, https://github.com/protocolbuffers/protobuf

    Affected packages

    Package

    Name: protobuf

    Purl: pkg:pypi/protobuf

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 6.30.0rc1
    Fixed -6.33.5

    Affected versions

    6.30.0
    6.30.0rc1
    6.30.0rc2
    6.30.1
    6.30.2

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    GHSA-7gcm-g887-7qv7 | CVE-DB