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MEDIUM

CVE-2023-46137

CVSS v3

5.3

MEDIUM

EPSS Score

0.9 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • twistedPyPIall versions · fixed in 23.10.0rc1

Vendor advisories

  • CVE-2023-46137 Red Hat Product Security28 products fixed · 2 known affected

    python-twisted: disordered HTTP pipeline response in twisted.web

    ansible-tower as a component of Red Hat Ansible Automation Platform 1.2 · python-twisted as a component of Red Hat Enterprise Linux 6

  • RHSA-2024:1640 Red Hat Product Security8 products fixed

    Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.4 Product Security and Bug Fix Update

  • RHSA-2024:1518 Red Hat Product Security7 products fixed

    Red Hat Security Advisory: Red Hat OpenStack Platform 16.2.6 (python-twisted) security update

  • RHSA-2024:1516 Red Hat Product Security7 products fixed

    Red Hat Security Advisory: Red Hat OpenStack Platform 16.1.9 (python-twisted) security update

  • RHSA-2024:0322 Red Hat Product Security6 products fixed

    Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.4 Product Security and Bug Fix Update

Full record on NVD

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.

Technical details

Published
2023-10-25

Frequently asked questions

What is CVE-2023-46137?

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.

Is CVE-2023-46137 actively exploited?

Active exploitation of CVE-2023-46137 has not been confirmed. Its EPSS score was 0.9% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-46137?

CVE-2023-46137 has a CVSS v3 base score of 5.3 (MEDIUM severity).

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