CVE-2021-21684

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    CVE-2021-21684

    Published: 6 Oct 2021Last Modified: 9 Jul 2026

    Summary:

    Details: Jenkins Git Plugin 4.8.2 and earlier does not escape the Git SHA-1 checksum parameters provided to commit notifications when displaying them in a build cause, resulting in a stored cross-site scripting (XSS) vulnerability.

    References: http://www.openwall.com/lists/oss-security/2021/10/06/1, https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2499

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    git-4.8.2
    git-4.8.1
    git-4.8.0

    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
    CVE-2021-21684 | CVE-DB