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TI-2024-19997 Aliases CVE-2024-30251GHSA-5m98-qgg9-wh84

Denial of service when trying to parse malformed POST requests in aiohttp

Priority MEDIUM 41CWE-835Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 3 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-835.

Summary

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. In affected versions an attacker can send a specially crafted POST (multipart/form-data) request. When the aiohttp server processes it, the server will enter an infinite loop and be unable to process any further requests. An attacker can stop the application from serving requests after sending a single request. This issue has been addressed in version 3.9.4. Users are advised to upgrade. Users unable to upgrade may manually apply a patch to their systems. Please see the linked GHSA for instructions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01094 65th percentileScored 2026-11-07
Fix Partial aiohttp (aio-libs): 3.9.4aiohttp (PyPI): 3.9.4Red Hat: 2 advisoriesRed Hat: 3 fixed, 2 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 3.9.43.9.4Patch availableCNA
—aiohttp (PyPI)before 3.9.43.9.4Patch availableGHSA-5m98-qgg9-wh84
  • aiohttp Vendoraio-libs Affected before 3.9.4 Fixed in 3.9.4 Patch available CNA
  • aiohttp (PyPI) Vendor— Affected before 3.9.4 Fixed in 3.9.4 Patch available GHSA-5m98-qgg9-wh84

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:*before 3.9.4VulnerableAiohttp
  • cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:* Versions before 3.9.4 Vulnerable ·Aiohttp

Remediation

  • Fix · CNA aiohttp (aio-libs) Fixed in 3.9.4
  • Fix · GHSA-5m98-qgg9-wh84 aiohttp (PyPI) Fixed in 3.9.4 Advisory →

Red Hat 2 advisories

  • RHSA-2025:1335 Released 2025-02-12 · Red Hat rating Important
    RHUI 4.11 security, bugfix, and enhancement update
    • RHUI 4 for RHEL 8 python-aiohttp-3.9.4-1.el8ui, python-cryptography-42.0.8-1.el8ui, python-django-4.2.15-1.el8ui +13
  • RHSA-2024:3781 Released 2024-06-10 · 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-4.5.7-1.el8ap, automation-hub-4.9.2-1.el8ap, python39-aiohttp-3.9.5-1.el8ap +25
    • Red Hat Ansible Automation Platform 2.4 for RHEL 9 automation-controller-venv-tower-4.5.7-1.el9ap, automation-hub-4.9.2-1.el9ap, python-aiohttp-3.9.5-1.el9ap +25

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Ansible Automation Platform 1.2AffectedNo fix planned: Out of support scope
Red Hat Satellite 6AffectedNo fix yet
RHUI 4 for RHEL 8Fixed RHSA-2025:1335
Red Hat Ansible Automation Platform 2.4 for RHEL 8Fixed RHSA-2024:3781
Red Hat Ansible Automation Platform 2.4 for RHEL 9Fixed RHSA-2024:3781
Not affected: 3 products
  • RHUI 4 for RHEL 8
  • Red Hat Ansible Automation Platform 2.4 for RHEL 8
  • Red Hat Ansible Automation Platform 2.4 for RHEL 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-30251
  2. 2026-10-03 Alias added: GHSA-5m98-qgg9-wh84

References

Patch 4

Advisory 1

Other 3

  • 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

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