CVE-2022-40023

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 74%
Affected Products (NVD)
VendorProductVersion
sqlalchemymako
𝑥
< 1.2.2
debiandebian_linux
10.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
mako
bookworm
1.2.4+ds-1
fixed
bullseye
no-dsa
sid
1.3.5-1.1
fixed
trixie
1.3.5-1.1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
mako
bionic
Fixed 1.0.7+ds1-1ubuntu0.2
released
focal
Fixed 1.1.0+ds1-1ubuntu2.1
released
jammy
Fixed 1.1.3+ds1-2ubuntu0.1
released
kinetic
Fixed 1.1.3+ds1-3ubuntu2.1
released
lunar
Fixed 1.2.4+ds-1
released
trusty
ignored
xenial
Fixed 1.0.3+ds1-1ubuntu1+esm1
released
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
python3-mako
RHEL 9
0:1.1.4-6.el9
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
python-mako
Amazon Linux 2
0:0.8.1-2.amzn2.0.1
fixed
python-mako-doc
Amazon Linux 2023
0:1.1.4-3.amzn2023.0.3
fixed
python3-mako
Amazon Linux 2023
0:1.1.4-3.amzn2023.0.3
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
python-mako
CBL-Mariner 1.0
0:1.0.7-5.cm1
fixed
CBL-Mariner 2.0
0:1.2.2-1.cm2
fixed
Common Weakness Enumeration
References
https://github.com/sqlalchemy/mako/blob/c2f392e0be52dc67d1b9770ab8cce6a9c736d547/mako/ext/extract.py#L21
https://github.com/sqlalchemy/mako/commit/925760291d6efec64fda6e9dd1fd9cfbd5be068c
https://github.com/sqlalchemy/mako/issues/366
https://lists.debian.org/debian-lts-announce/2022/09/msg00026.html
https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages/
https://pyup.io/vulnerabilities/CVE-2022-40023/50870/
https://github.com/sqlalchemy/mako/blob/c2f392e0be52dc67d1b9770ab8cce6a9c736d547/mako/ext/extract.py#L21
https://github.com/sqlalchemy/mako/commit/925760291d6efec64fda6e9dd1fd9cfbd5be068c
https://github.com/sqlalchemy/mako/issues/366
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/