CVE-2023-46137: twisted.web has disordered HTTP pipeline response

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-10-25 · updated 2026-06-17
Weakness: CWE-444

Description

Twisted is an event-based framework for internet applications. Prior to version 23.10.0rc1, when sending multiple HTTP requests in one TCP packet, twisted.web will process the requests asynchronously without guaranteeing the response order. If one of the endpoints is controlled by an attacker, the attacker can delay the response on purpose to manipulate the response of the second request when a victim launched two requests using HTTP pipeline. Version 23.10.0rc1 contains a patch for this issue.

Affected products

twisted: through 22.8.0

References

https://github.com/twisted/twisted/security/advisories/GHSA-xc8x-vp79-p3wm
https://github.com/twisted/twisted/security/advisories/GHSA-xc8x-vp79-p3wm
https://lists.debian.org/debian-lts-announce/2024/11/msg00028.html

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