# CVE-2022-24801: python3-twisted: Twisted is an event-based framework for internet applications, supportingPython 3.6+

CVE-2022-24801 is fixed in 3 products on 1 platform, first by python3-twisted 22.1.0-2ubuntu2.3, released April 4, 2022. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-24801
- Priority: High
- CVSS: 8.1 (Medium)
- EPSS: 0.0280
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 4, 2022

## Description

Twisted is an event-based framework for internet applications, supportingPython 3.6+. Prior to version 22.4.0rc1, the Twisted Web HTTP 1.1 server,located in the `twisted.web.http` module, parsed several HTTP requestconstructs more leniently than permitted by RFC 7230. This non-conformantparsing can lead to desync if requests pass through multiple HTTP parsers,potentially resulting in HTTP request smuggling. Users who may be affecteduse Twisted Web's HTTP 1.1 server and/or proxy and also pass requeststhrough a different HTTP server and/or proxy. The Twisted Web client is notaffected. The HTTP 2.0 server uses a different parser, so it is notaffected. The issue has been addressed in Twisted 22.4.0rc1. Twoworkarounds are available: Ensure any vulnerabilities in upstream proxieshave been addressed, such as by upgrading them; or filter malformedrequests by other means, such as configuration of an upstream proxy.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python3-twisted Ubuntu 22.04.1 LTS (jammy) | 22.1.0-2ubuntu2.3 | [python3-twisted 22.1.0-2ubuntu2.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-python3-twisted-22.1.0-2ubuntu2.3.md) | Apr 4, 2022 |
| Linux | python3-twisted Ubuntu 24.10 (oracular) | 22.4.0-1 | [python3-twisted 22.4.0-1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-python3-twisted-22.4.0-1.md) | Jan 16, 2026 |
| Linux | python3-twisted Ubuntu 25.04 (plucky) | 22.4.0-1 | [python3-twisted 22.4.0-1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-python3-twisted-22.4.0-1.md) | Jan 16, 2026 |
| Linux | python3-twisted amzn 2023 | 22.4.0-124.amzn2023.0.2 | [ALAS2023-2023-056](https://patchblox.com/security/data/fix/linux/alas2023-2023-056.md) | Feb 17, 2023 |
| Linux | python3-twisted+tls amzn 2023 | 22.4.0-124.amzn2023.0.2 | [ALAS2023-2023-056](https://patchblox.com/security/data/fix/linux/alas2023-2023-056.md) | Feb 17, 2023 |
| Linux | twisted Debian 12.15 (bookworm) | 22.4.0-1 | [DEBIAN-CVE-2022-24801](https://patchblox.com/security/data/fix/linux/debian-cve-2022-24801.md) | Apr 4, 2022 |
| Linux | twisted Debian 13.5 (trixie) | 22.4.0-1 | [DEBIAN-CVE-2022-24801](https://patchblox.com/security/data/fix/linux/debian-cve-2022-24801.md) | Apr 4, 2022 |
| Linux | twisted Debian 14 | 22.4.0-1 | [DEBIAN-CVE-2022-24801](https://patchblox.com/security/data/fix/linux/debian-cve-2022-24801.md) | Apr 4, 2022 |

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Data as of 2026-11-08T00:53:09Z 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

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