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TI-2024-15823 Aliases CVE-2024-23829GHSA-8qpw-xqxj-h4r2

aiohttp's HTTP parser (the python one, not llhttp) still overly lenient about separators

Priority LOW 37CWE-444Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · Low
Fix status
Partial Red Hat: 5 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01029 63rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial aiohttp (aio-libs): 3.9.2aiohttp (PyPI): 3.9.2Red Hat: 4 advisoriesRed Hat: 5 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
aio-libsaiohttpbefore 3.9.23.9.2Patch availableCNA
—aiohttp (PyPI)before 3.9.23.9.2Patch availableGHSA-8qpw-xqxj-h4r2
  • aiohttp Vendoraio-libs Affected before 3.9.2 Fixed in 3.9.2 Patch available CNA
  • aiohttp (PyPI) Vendor— Affected before 3.9.2 Fixed in 3.9.2 Patch available GHSA-8qpw-xqxj-h4r2

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:*before 3.9.2VulnerableAiohttp
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*39VulnerableFedoraproject
  • cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:* Versions before 3.9.2 Vulnerable ·Aiohttp
  • cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* Versions 39 Vulnerable ·Fedoraproject

Remediation

  • Fix · CNA aiohttp (aio-libs) Fixed in 3.9.2
  • Fix · GHSA-8qpw-xqxj-h4r2 aiohttp (PyPI) Fixed in 3.9.2 Advisory →

Red Hat 4 advisories

  • RHSA-2024:2010 Released 2024-04-23 · Red Hat rating Important
    Satellite 6.15.0 release
    • Red Hat Satellite 6.15 for RHEL 8 foreman-3.9.1.6-1.el8sat, foreman-cli-3.9.1.6-1.el8sat, foreman-debug-3.9.1.6-1.el8sat +28
  • RHSA-2024:1878 Released 2024-04-18 · Red Hat rating Moderate
    RHUI 4.8 Release - Security Updates, Bug Fixes, and Enhancements
    • RHUI 4 for RHEL 8 python-aiohttp-3.9.2-1.el8ui, python-cryptography-41.0.6-1.el8ui, python-django-4.2.11-1.el8ui +7
  • RHSA-2024:1640 Released 2024-04-02 · Red Hat rating Moderate
    Red Hat Ansible Automation Platform 2.4 Product Security and Bug Fix Update
    • Red Hat Ansible Automation Platform 2.4 for RHEL 8 automation-controller-venv-tower-4.5.5-2.el8ap, python39-aiohttp-3.9.3-1.el8ap, python39-django-4.2.11-1.el8ap +4
    • Red Hat Ansible Automation Platform 2.4 for RHEL 9 automation-controller-venv-tower-4.5.5-2.el9ap, python-aiohttp-3.9.3-1.el9ap, python-django-4.2.11-1.el9ap +4
Show 1 more Red Hat advisories
  • RHSA-2024:1536 Released 2024-03-27 · Red Hat rating Moderate
    Satellite 6.14.3 Async Security Update
    • Red Hat Satellite 6.14 for RHEL 8 python-aiohttp-3.9.2-0.1.el8pc, python-django-3.2.22-1.el8pc, python-galaxy-importer-0.4.18-2.el8pc +5

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Ansible Automation Platform 1.2AffectedNo fix planned: Out of support scope
RHUI 4 for RHEL 8Fixed RHSA-2024:1878
Red Hat Ansible Automation Platform 2.4 for RHEL 8Fixed RHSA-2024:1640
Red Hat Ansible Automation Platform 2.4 for RHEL 9Fixed RHSA-2024:1640
Red Hat Satellite 6.14 for RHEL 8Fixed RHSA-2024:1536
Red Hat Satellite 6.15 for RHEL 8Fixed RHSA-2024:2010
Not affected: 6 products
  • RHUI 4 for RHEL 8
  • Red Hat Ansible Automation Platform 2
  • Red Hat Ansible Automation Platform 2.4 for RHEL 8
  • Red Hat Ansible Automation Platform 2.4 for RHEL 9
  • Red Hat Satellite 6.14 for RHEL 8
  • Red Hat Satellite 6.15 for RHEL 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-23829
  2. 2026-10-03 Alias added: GHSA-8qpw-xqxj-h4r2

References

Exploit 1

Patch 2

Advisory 1

Other 10

  • TI-2025-38826 aiomysql allows arbitrary access to client files through vulnerability of a malicious MySQL server CVSS 4.0HIGH 8.2
  • TI-2024-15436 aiohttp.web.static(follow_symlinks=True) is vulnerable to directory traversal CVSS 3.1HIGH 7.5
  • TI-2023-25769 Request smuggling in aiohttp CVSS 3.1HIGH 7.5
  • TI-2023-18906 aiohttp vulnerable to HTTP request smuggling CVSS 3.1HIGH 7.5
  • TI-2023-26746 aiohttp's ClientSession is vulnerable to CRLF injection via version CVSS 3.1HIGH 7.2
  • TI-2026-66145 Multidict: Reference leak in CIMultiDict/MultiDict items-view union and subtraction CVSS 3.1MEDIUM 5.3
See all 59 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences