PYSEC-2020-240

    Dashboard / Vulnerabilities / PYSEC-2020-240

    PYSEC-2020-240

    Published: 15 Jun 2020Last Modified: 10 Jun 2026

    Summary:

    Details: A Denial of Service (DoS) condition is possible in OpenStack Mistral in versions up to and including 7.0.3. Submitting a specially crafted workflow definition YAML file containing nested anchors can lead to resource exhaustion culminating in a denial of service.

    References: https://bugzilla.redhat.com/show_bug.cgi?id=1645332, https://bugs.launchpad.net/mistral/+bug/1785657, https://github.com/advisories/GHSA-443j-6p7g-6v4w

    Affected packages

    Package

    Name: mistral

    Purl: pkg:pypi/mistral

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -7.0.4

    Affected versions

    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
    PYSEC-2020-240 | CVE-DB