CVE-2021-39940

    Dashboard / Vulnerabilities / CVE-2021-39940

    CVE-2021-39940

    Published: 13 Dec 2021Last Modified: 27 Aug 2026

    Summary:

    Details: An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.2 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. GitLab Maven Package registry is vulnerable to a regular expression denial of service when a specifically crafted string is sent.

    References: https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39940.json, https://gitlab.com/gitlab-org/gitlab/-/issues/263116, https://hackerone.com/reports/997961

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- ce28f708ec5ca68092e16f55e47710367d32f2a1
    Fixed -057790c613dea428aa523357c333ced5433794ee

    Affected versions

    v14.5.1-ee
    v14.5.0-ee

    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-2021-39940 | CVE-DB