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MEDIUM

CVE-2024-23829

CVSS v3

6.5

MEDIUM

EPSS Score

1.0 %

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

  • aiohttpPyPIall versions · fixed in 3.9.2

Vendor advisories

  • CVE-2024-23829 Red Hat Product Security46 products fixed · 1 known affected

    python-aiohttp: http request smuggling

    ansible-tower.src as a component of Red Hat Ansible Automation Platform 1.2

  • RHSA-2024:2010 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Satellite 6.15.0 release

  • RHSA-2024:1878 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: RHUI 4.8 Release - Security Updates, Bug Fixes, and Enhancements

  • RHSA-2024:1640 Red Hat Product Security34 products fixed

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

  • RHSA-2024:1536 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Satellite 6.14.3 Async Security Update

Full record on NVD

Description

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Security-sensitive parts of the Python HTTP parser retained minor differences in allowable character sets, that must trigger error handling to robustly match frame boundaries of proxies in order to protect against injection of additional requests. Additionally, validation could trigger exceptions that were not handled consistently with processing of other malformed input. Being more lenient than internet standards require could, depending on deployment environment, assist in request smuggling. The unhandled exception could cause excessive resource consumption on the application server and/or its logging facilities. This vulnerability exists due to an incomplete fix for CVE-2023-47627. Version 3.9.2 fixes this vulnerability.

Technical details

Published
2024-01-29

Frequently asked questions

What is CVE-2024-23829?

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Security-sensitive parts of the Python HTTP parser retained minor differences in allowable character sets, that must trigger error handling to robustly match frame boundaries of proxies in order to protect against injection of additional requests. Additionally, validation could trigger exceptions that were not handled consistently with processing of other malformed input. Being more lenient than internet standards require could, depending on deployment environment, assist in request smuggling. The unhandled exception could cause excessive resource consumption on the application server and/or its logging facilities. This vulnerability exists due to an incomplete fix for CVE-2023-47627. Version 3.9.2 fixes this vulnerability.

Is CVE-2024-23829 actively exploited?

Active exploitation of CVE-2024-23829 has not been confirmed. Its EPSS score was 1.0% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-23829?

CVE-2024-23829 has a CVSS v3 base score of 6.5 (MEDIUM severity).

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