AIOHTTP vulnerable to DoS when bypassing asserts
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 6 fixed, 7 without a fix
Attack profile from CVSS 4.0 · 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. Versions 3.13.2 and below allow for an infinite loop to occur when assert statements are bypassed, resulting in a DoS attack when processing a POST body. If optimizations are enabled (-O or PYTHONOPTIMIZE=1), and the application includes a handler that uses the Request.post() method, then an attacker may be able to execute a DoS attack with a specially crafted message. This issue is fixed in version 3.13.3.
Why it matters now
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| aio-libs | aiohttp | before 3.13.3 | 3.13.3 | Patch available | CNA |
| — | aiohttp (PyPI) | before 3.13.3 | 3.13.3 | Patch available | GHSA-jj3x-wxrx-4x23 |
- aiohttp Vendoraio-libs Affected before 3.13.3 Fixed in 3.13.3 Patch available CNA
- aiohttp (PyPI) Vendor— Affected before 3.13.3 Fixed in 3.13.3 Patch available GHSA-jj3x-wxrx-4x23
Remediation
- Fix · CNA aiohttp (aio-libs) Fixed in 3.13.3
- Fix · GHSA-jj3x-wxrx-4x23 aiohttp (PyPI) Fixed in 3.13.3 Advisory →
Red Hat 13 advisories
- RHSA-2026:59155 Released 2026-08-24 · Red Hat rating ImportantRed Hat Ansible Automation Platform 2.6 Container Release Update
- Red Hat Ansible Automation Platform 2.6 registry.redhat.io/ansible-automation-platform-26/controller-rhel9, registry.redhat.io/ansible-automation-platform-26/eda-controller-rhel9, registry.redhat.io/ansible-automation-platform-26/ee-supported-rhel9 +5
- RHSA-2026:55853 Released 2026-08-17 · Red Hat rating ImportantRed Hat Ansible Automation Platform Execution Environments Update
- Red Hat Ansible Automation Platform 2.18 registry.redhat.io/ansible-automation-platform/ee-minimal-rhel8
- RHSA-2026:55852 Released 2026-08-17 · Red Hat rating ImportantRed Hat Ansible Automation Platform Execution Environments Update
- Red Hat Ansible Automation Platform 2.18 registry.redhat.io/ansible-automation-platform/ee-minimal-rhel9
Show 10 more Red Hat advisories
- RHSA-2026:42644 Released 2026-07-21 · Red Hat rating ImportantRHOAI 2.25.9 - Red Hat OpenShift AI
- Red Hat OpenShift AI 2.25 registry.redhat.io/rhoai/odh-caikit-tgis-serving-rhel9, registry.redhat.io/rhoai/odh-feature-server-rhel9, registry.redhat.io/rhoai/odh-kserve-storage-initializer-rhel9 +36
- RHSA-2026:41928 Released 2026-07-20 · Red Hat rating ImportantRed Hat Migration Toolkit for Containers
- Red Hat Migration Toolkit 1.8 registry.redhat.io/rhmtc/openshift-migration-controller-rhel8, registry.redhat.io/rhmtc/openshift-migration-hook-runner-rhel8, registry.redhat.io/rhmtc/openshift-migration-log-reader-rhel8 +6
- RHSA-2026:24977 Released 2026-06-10 · Red Hat rating ImportantRHOAI 2.25.7 - Red Hat OpenShift AI
- Red Hat OpenShift AI 2.25 registry.redhat.io/rhoai/odh-caikit-nlp-rhel9, registry.redhat.io/rhoai/odh-caikit-tgis-serving-rhel9, registry.redhat.io/rhoai/odh-dashboard-rhel9 +34
- RHSA-2026:13553 Released 2026-05-04 · Red Hat rating ImportantRed Hat Ansible Automation Platform 2.5 Container Release Update
- Red Hat Ansible Automation Platform 2.5 registry.redhat.io/ansible-automation-platform-25/ee-supported-rhel8, registry.redhat.io/ansible-automation-platform-25/gateway-rhel8, registry.redhat.io/ansible-automation-platform-25/hub-rhel8 +2
- RHSA-2026:13545 Released 2026-05-04 · Red Hat rating ImportantRed Hat Ansible Automation Platform 2.6 Container Release Update
- Red Hat Ansible Automation Platform 2.6 registry.redhat.io/ansible-automation-platform-26/ansible-dev-tools-rhel9, registry.redhat.io/ansible-automation-platform-26/controller-rhel9, registry.redhat.io/ansible-automation-platform-26/eda-controller-rhel9 +11
- RHSA-2026:10184 Released 2026-04-23 · Red Hat rating ImportantRHOAI 2.25.5 - Red Hat OpenShift AI
- Red Hat OpenShift AI 2.25 registry.redhat.io/rhoai/odh-caikit-nlp-rhel9, registry.redhat.io/rhoai/odh-caikit-tgis-serving-rhel9, registry.redhat.io/rhoai/odh-dashboard-rhel9 +47
- RHSA-2026:6762 Released 2026-04-07 · Red Hat rating ImportantRed Hat AI Inference Server 3.2.2 (ROCm)
- Red Hat AI Inference Server 3.2 registry.redhat.io/rhaiis/vllm-rocm-rhel9
- RHSA-2026:6761 Released 2026-04-07 · Red Hat rating ImportantRed Hat AI Inference Server Model Optimization Tools 3.2.2 (CUDA)
- Red Hat AI Inference Server 3.2 registry.redhat.io/rhaiis/model-opt-cuda-rhel9
- RHSA-2026:5809 Released 2026-03-25 · Red Hat rating ImportantRed Hat AI Inference Server 3.2.2 (cuda-ubi9)
- Red Hat AI Inference Server 3.2 registry.redhat.io/rhaiis/vllm-cuda-rhel9
- RHSA-2026:3782 Released 2026-03-04 · Red Hat rating CriticalRHOAI 2.25.3 - Red Hat OpenShift AI
- Red Hat OpenShift AI 2.25 registry.redhat.io/rhoai/odh-caikit-tgis-serving-rhel9, registry.redhat.io/rhoai/odh-codeflare-operator-rhel9, registry.redhat.io/rhoai/odh-dashboard-rhel9 +27
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| OpenShift Lightspeed | Affected | No fix yet |
| OpenShift Service Mesh 2 | Affected | No fix yet |
| Red Hat AI Inference Server | Affected | No fix yet |
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | Affected | No fix yet |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet |
| Red Hat Satellite 6 | Affected | No fix yet |
| Red Hat AI Inference Server 3.2 | Fixed | RHSA-2026:5809, RHSA-2026:6761, RHSA-2026:6762 |
| Red Hat Ansible Automation Platform 2.18 | Fixed | RHSA-2026:55852, RHSA-2026:55853 |
| Red Hat Ansible Automation Platform 2.5 | Fixed | RHSA-2026:13553 |
| Red Hat Ansible Automation Platform 2.6 | Fixed | RHSA-2026:13545, RHSA-2026:59155 |
| Red Hat Migration Toolkit 1.8 | Fixed | RHSA-2026:41928 |
| Red Hat OpenShift AI 2.25 | Fixed | RHSA-2026:10184, RHSA-2026:24977, RHSA-2026:3782, RHSA-2026:42644 |
Not affected: 7 products
- Red Hat Ansible Automation Platform 2
- Red Hat Ansible Automation Platform 2.5
- Red Hat Ansible Automation Platform 2.6
- Red Hat Ansible Automation Platform Ansible Core 2
- Red Hat Migration Toolkit 1.8
- Red Hat OpenShift AI (RHOAI)
- Red Hat OpenShift AI 2.25
Timeline
- 2026-10-02 Threatist record created from CVE-2025-69227
- 2026-10-03 Alias added: GHSA-jj3x-wxrx-4x23
- 2026-10-09 Affected versions changed · Red Hat
- 2026-11-06 Fix available: RHSA-2026:42644 · Red Hat
References
More aio-libs vulnerabilities
- 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
Sources
- CVE-2025-69227 · CVE Program
- CVE-2025-69227 · NVD
- FIRST EPSS
- GHSA-jj3x-wxrx-4x23 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-69227 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences