# DLA-4393-1: mako security update

DLA-4393-1, released December 3, 2025, fixes 1 CVE in mako (version 1.1.3+ds1-2+deb11u1). None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/dla-4393-1
- Platform: Linux
- Released: Dec 3, 2025
- Priority: High (Closes CVE-2022-40023, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://security-tracker.debian.org/tracker/CVE-2022-40023

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [mako](https://patchblox.com/security/data/product/linux/mako.md) | Debian 11.6 (bullseye) | 1.1.3+ds1-2+deb11u1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2022-40023](https://patchblox.com/security/data/cve/CVE-2022-40023.md) | High | python3-mako: Sqlalchemy mako before 1.2.2 is vulnerable to Regular expression Denial of Service when using the Lexer class to parse | 7.5 | 0.0232 |  |

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Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo