GHSA-8554-jxcw-454q

    Dashboard / Vulnerabilities / GHSA-8554-jxcw-454q

    GHSA-8554-jxcw-454q

    Published: 12 Mar 2019Last Modified: 4 Aug 2025

    Summary: Webargs mishandles concurrent JSON parsing

    Details: An issue was discovered in webargs before 5.1.3, as used with marshmallow and other products. JSON parsing uses a short-lived cache to store the parsed JSON body. This cache is not thread-safe, meaning that incorrect JSON payloads could have been parsed for concurrent requests.

    References: https://nvd.nist.gov/vuln/detail/CVE-2019-9710, https://github.com/marshmallow-code/webargs/issues/371, https://github.com/marshmallow-code/webargs/pull/373, https://github.com/marshmallow-code/webargs/commit/716bd8d1f24c84aaf99170efaa17d1d34206f6c0, https://github.com/marshmallow-code/webargs, https://github.com/pypa/advisory-database/tree/main/vulns/webargs/PYSEC-2019-139.yaml, https://webargs.readthedocs.io/en/latest/changelog.html, https://webargs.readthedocs.io/en/latest/changelog.html#id24

    Affected packages

    Package

    Name: webargs

    Purl: pkg:pypi/webargs

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -5.1.3

    Affected versions

    0.1.0

    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