CVE-2022-40023

    Dashboard / Vulnerabilities / CVE-2022-40023

    CVE-2022-40023

    Published: 7 Sept 2022Last Modified: 22 Aug 2026

    Summary:

    Details: Sqlalchemy mako before 1.2.2 is vulnerable to Regular expression Denial of Service when using the Lexer class to parse. This also affects babelplugin and linguaplugin.

    References: https://github.com/sqlalchemy/mako/blob/c2f392e0be52dc67d1b9770ab8cce6a9c736d547/mako/ext/extract.py#L21, https://lists.debian.org/debian-lts-announce/2025/12/msg00004.html, https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages/, https://pyup.io/vulnerabilities/CVE-2022-40023/50870/, https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/40xxx/CVE-2022-40023.json, https://nvd.nist.gov/vuln/detail/CVE-2022-40023, https://github.com/sqlalchemy/mako/issues/366, https://github.com/sqlalchemy/mako/commit/925760291d6efec64fda6e9dd1fd9cfbd5be068c, https://lists.debian.org/debian-lts-announce/2022/09/msg00026.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -5054cc07ce6a957143251d32a963b8e0e437457a

    Affected versions

    rel_1_2_1

    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-2022-40023 | CVE-DB