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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…
High7.5EPSS 2.3%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 2.3% · top 16% of all CVEs (7 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
References (7)
- https://github.com/sqlalchemy/mako/issues/366 (opens in a new tab)x_transferred
- https://github.com/sqlalchemy/mako/commit/925760291d6efec64fda6e9dd1fd9cfbd5be068c (opens in a new tab)x_transferred
- https://github.com/sqlalchemy/mako/blob/c2f392e0be52dc67d1b9770ab8cce6a9c736d547/mako/ext/extract.py#L21 (opens in a new tab)x_transferred
- https://pyup.io/vulnerabilities/CVE-2022-40023/50870/ (opens in a new tab)x_transferred
- [debian-lts-announce] 20220921 [SECURITY] [DLA 3116-1] mako security update (opens in a new tab)mailing-listx_transferred
- https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages/ (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2025/12/msg00004.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-v973-fxgf-6xhp (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2022-40023)Record last updated .