GHSA-v973-fxgf-6xhp

    Dashboard / Vulnerabilities / GHSA-v973-fxgf-6xhp

    GHSA-v973-fxgf-6xhp

    Published: 16 Sept 2022Last Modified: 3 Dec 2025

    Summary: mako is vulnerable to Regular Expression Denial of Service

    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://nvd.nist.gov/vuln/detail/CVE-2022-40023, https://github.com/sqlalchemy/mako/issues/366, https://github.com/sqlalchemy/mako/commit/925760291d6efec64fda6e9dd1fd9cfbd5be068c, https://github.com/advisories/GHSA-v973-fxgf-6xhp, https://github.com/pypa/advisory-database/tree/main/vulns/mako/PYSEC-2022-260.yaml, https://github.com/sqlalchemy/mako, https://github.com/sqlalchemy/mako/blob/c2f392e0be52dc67d1b9770ab8cce6a9c736d547/mako/ext/extract.py#L21, https://lists.debian.org/debian-lts-announce/2022/09/msg00026.html, 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

    Affected packages

    Package

    Name: mako

    Purl: pkg:pypi/mako

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.2.2

    Affected versions

    0.1.0
    0.1.1
    0.1.10
    0.1.2
    0.1.3
    0.1.4
    0.1.5
    0.1.6
    0.1.7
    0.1.8
    0.1.9

    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
    GHSA-v973-fxgf-6xhp | CVE-DB