Skip to content
Fencer Intel
high 8.2

CVE-2026-111066 json

AIOHTTP: File descriptor exhaustion in multipart requests

published 21d ago modified 20d ago also EUVD-2026-104482 , GHSA-9xw5-w5jj-pvcg

cvss
8.2
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. From 2.0.0 until 3.14.4, multipart request processing can retain an unbounded number of open file descriptors. An unauthenticated attacker can consequently exhaust file descriptors with specially crafted multipart requests when a handler uses Request.post(). This issue is fixed in version 3.14.4.

Patch / fix

  • pypi aiohttp 3.14.4
  • aiohttp aiohttp 3.14.4

Is CVE-2026-111066 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-111066 updated cvss 7.5

aiohttp: aiohttp: Denial of Service via file descriptor exhaustion in multipart request processing

  • Red Hat Exploit Intelligence exploit-intelligence/vulnerability-analysis-rhel9 Red Hat Lightspeed Core lightspeed-core/rag-tool-cpu-rhel9, lightspeed-core/lightspeed-stack-rhel9, lightspeed-core/rag-tool-cuda-12.9-rhel9 Red Hat Migration Toolkit for Applications 8 mta/mta-solution-server-rhel9 Red Hat OpenShift Lightspeed openshift-lightspeed/lightspeed-ocp-rag-rhel9, openshift-lightspeed/lightspeed-service-api-rhel9, openshift-lightspeed-tech-preview/lightspeed-rag-tool-rhel9
    affected: workaround, no fix available
  • Red Hat AI Inference Server rhaii/vllm-tpu-rhel9, rhaiis/vllm-tpu-rhel9, rhaiis/vllm-cuda-rhel9, rhaiis/vllm-rocm-rhel9, rhaii/vllm-neuron-rhel9, rhaiis/vllm-spyre-rhel9, +1 more Red Hat Ansible Automation Platform 2 python3.12-aiohttp 3.9.5-4.el8ap, automation-controller 4.7.18-1.el9ap, ansible-automation-platform-26/hub-rhel9, ansible-automation-platform-27/hub-rhel9, ansible-automation-platform-24/controller-rhel8, ansible-automation-platform-25/controller-rhel8, +15 more
    affected: workaround, no fix available, no fix planned “Will not fix”
  • Red Hat Enterprise Linux AI (RHEL AI) 3 rhelai3/bootc-cuda-rhel9, rhelai3/bootc-rocm-rhel9, rhelai3/bootc-gaudi-rhel9, rhelai3/bootc-aws-cuda-rhel9, rhelai3/bootc-gcp-cuda-rhel9, rhelai3/bootc-azure-cuda-rhel9, +1 more
    affected: workaround, no fix available
  • Red Hat Lightspeed Services for OCP lightspeed-services-ocp/ocp-rules-rhel9
    affected: workaround, no fix planned “Will not fix”
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-automl-rhel9, rhoai/odh-mlflow-rhel9, rhoai/odh-autorag-rhel9, rhoai/odh-caikit-nlp-rhel9, rhoai/odh-mlserver-cuda-rhel9, rhoai/odh-feature-server-rhel9, +42 more
    affected: workaround, no fix available, no fix planned “Will not fix”
  • Red Hat Satellite 6 python3-aiohttp, python-aiohttp 3.9.5-1.el9ap, python3.12-aiohttp 3.9.5-4.el8ap, satellite/iop-insights-engine-rhel9, satellite/iop-vulnerability-engine-rhel9
    affected: workaround, no fix available
  • Red Hat AI Inference Server 3.5 rhaii/vllm-cpu-rhel9 1793444554, rhaii/vllm-cuda-rhel9 1793444600, rhaii/vllm-rocm-rhel9 1793444456, rhaii/vllm-gaudi-rhel9 1793444510, rhaii/vllm-spyre-rhel9 1793444409, rhaii/model-opt-cuda-rhel9 1793444339
    fixed: vendor fix RHSA-2026:94715
  • Red Hat Ansible Automation Platform 2.6 ansible-automation-platform-26/ee-minimal-rhel9 1793122736
    fixed: vendor fix RHSA-2026:92856
show 6 more
  • Red Hat Discovery 2 discovery/discovery-server-rhel9 1792604013, discovery/discovery-server-rhel9 1793218657
    fixed: vendor fix RHSA-2026:92136
  • Red Hat OpenShift AI 3.4 rhoai/odh-mlserver-rhel9 1793110755, rhoai/odh-ta-lmes-job-rhel9 1793001715, rhoai/odh-kserve-router-rhel9 1792688864, rhoai/odh-model-registry-job-async-upload-rhel9 1792729757
    fixed: vendor fix RHSA-2026:92510
  • Red Hat OpenShift AI 3.5 rhai/guidellm-rhel9 1793719302
    fixed: vendor fix RHSA-2026:94631
  • Red Hat AI Inference Server rhaiis/vllm-cpu-rhel9, rhaiis/vllm-neuron-rhel9 Red Hat Ansible Automation Platform 2 python-aiohttp 3.9.5-1.el9ap, python3x-aiohttp 3.9.5-1.el8ap, python3.11-aiohttp 3.9.5-1.el9ap, ansible-automation-platform-24/lightspeed-rhel8, ansible-automation-platform-25/lightspeed-rhel8, ansible-automation-platform-26/lightspeed-rhel9, +2 more Red Hat Ansible Automation Platform 2.6 ansible-automation-platform-26/hub-rhel9 1793056118, ansible-automation-platform-26/gateway-rhel9 1793054375, ansible-automation-platform-26/hub-web-rhel9 1793115274, ansible-automation-platform-26/receptor-rhel9 1793119655, ansible-automation-platform-26/mcp-tools-rhel9 1793055143, ansible-automation-platform-26/controller-rhel9 1793126646, +23 more Red Hat Ansible Automation Platform Ansible Core 2 ansible-automation-platform/ee-minimal-rhel8, ansible-automation-platform/ee-minimal-rhel9, ansible-automation-platform-tech-preview/ee-minimal-rhel8, ansible-automation-platform-tech-preview/ee-minimal-rhel9 Red Hat Discovery 2 discovery/discovery-ui-rhel9 1792603924, discovery/discovery-ui-rhel9 1793218530
    not affected: vulnerable code not present
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-vllm-gaudi-rhel9, rhoai/odh-kserve-agent-rhel9, rhoai/odh-kserve-controller-rhel9, rhoai/odh-th06-cpu-torch291-py312-rhel9, rhoai/odh-th06-cuda130-torch291-py312-rhel9
    not affected: component not present
  • Red Hat OpenShift AI 3.4 rhoai/odh-cli-rhel9 1792722177, rhoai/rhai-cli-rhel9 1792722177, rhoai/odh-automl-rhel9 1792697253, rhoai/odh-mlflow-rhel9 1793002327, rhoai/odh-autorag-rhel9 1793265800, rhoai/odh-trainer-rhel9 1792817113, +96 more Red Hat Update Infrastructure 4 for Cloud Providers python-aiohttp 3.9.5-1.el9ap
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
20d ago

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 4.0 8.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA 4.0 8.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem package affected fixed in
pypi aiohttp
>=2.0.0, <3.14.4
3.14.4

Affected products

  • aio-libs aiohttp

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.