TI-2026-76528 Aliases CVE-2026-111065 GHSA-6cjc-53gc-5rqm

Connector pool exhaustion in AIOHTTP via Max-Age overflow

LOW 37CWE-770Published 2026-10-19 · Updated 2026-10-19

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 · Low
Fix status: Partial Red Hat: 1 fixed, 13 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-770.

Summary

aiohttp from aio-libs (PyPI package aiohttp) is affected before 3.14.4. Max-Age processing can overflow and skip closing a connection, which is a flaw of allocation without limits or throttling (CWE-770). A remote, unauthenticated attacker can exhaust the connection pool temporarily until garbage collection resolves the connections.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, Max-Age processing can overflow and skip closing a connection. An attacker can consequently exhaust the connection pool temporarily until garbage collection resolves the connections. This issue is fixed in version 3.14.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00395 33rd percentileScored 2026-11-07

Fix Partial aiohttp (aio-libs): 3.14.4aiohttp (PyPI): 3.14.4Red Hat: 6 advisoriesRed Hat: 1 fixed, 13 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

Vendor	Product	Affected versions	Fixed in	Status	Source
aio-libs	aiohttp	before 3.14.4	3.14.4	Patch available	CNA
—	aiohttp (PyPI)	before 3.14.4	3.14.4	Patch available	GHSA-6cjc-53gc-5rqm

aiohttp Vendoraio-libs Affected before 3.14.4 Fixed in 3.14.4 Patch available CNA
aiohttp (PyPI) Vendor— Affected before 3.14.4 Fixed in 3.14.4 Patch available GHSA-6cjc-53gc-5rqm

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:aiohttp:aiohttp::::::::	—	—	Aiohttp

cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:* Versions — — ·Aiohttp

Remediation

Upgrade aiohttp from PyPI to 3.14.4. Red Hat fixes Red Hat AI Inference Server 3.5 through advisories RHSA-2026:94738, RHSA-2026:94721, RHSA-2026:94717, RHSA-2026:94715, RHSA-2026:94709 and RHSA-2026:94702. Red Hat lists Exploit Intelligence and Red Hat Update Infrastructure 4 for Cloud Providers as affected without a fix, with no fix planned, and lists Lightspeed Core, Migration Toolkit for Applications 8, OpenShift Lightspeed and other products with no fix available.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Fix · CNA aiohttp (aio-libs) Fixed in 3.14.4
Fix · GHSA-6cjc-53gc-5rqm aiohttp (PyPI) Fixed in 3.14.4 Advisory →

Red Hat 6 advisories

RHSA-2026:94738 Released 2026-11-03 · Red Hat rating Critical
Red Hat AI Inference 3.5.3 (CUDA)
- Red Hat AI Inference Server 3.5 registry.redhat.io/rhaii/vllm-cuda-rhel9
RHSA-2026:94721 Released 2026-11-03 · Red Hat rating Critical
Red Hat AI Inference Tech Preview 3.5.3 (Gaudi)
- Red Hat AI Inference Server 3.5 registry.redhat.io/rhaii/vllm-gaudi-rhel9
RHSA-2026:94717 Released 2026-11-03 · Red Hat rating Critical
Red Hat AI Inference 3.5.3 (Spyre)
- Red Hat AI Inference Server 3.5 registry.redhat.io/rhaii/vllm-spyre-rhel9

Show 3 more Red Hat advisories

RHSA-2026:94715 Released 2026-11-03 · Red Hat rating Critical
Red Hat AI Inference Model Optimization Tools 3.5.3 (CUDA)
- Red Hat AI Inference Server 3.5 registry.redhat.io/rhaii/model-opt-cuda-rhel9
RHSA-2026:94709 Released 2026-11-03 · Red Hat rating Critical
Red Hat AI Inference 3.5.3 (ROCm)
- Red Hat AI Inference Server 3.5 registry.redhat.io/rhaii/vllm-rocm-rhel9
RHSA-2026:94702 Released 2026-11-03 · Red Hat rating Critical
Red Hat AI Inference 3.5.3 (CPU)
- Red Hat AI Inference Server 3.5 registry.redhat.io/rhaii/vllm-cpu-rhel9

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Exploit Intelligence	Affected	No fix planned: Out of support scope
Lightspeed Core	Affected	No fix yet: Fix deferred
Migration Toolkit for Applications 8	Affected	No fix yet: Fix deferred
OpenShift Lightspeed	Affected	No fix yet: Fix deferred
Red Hat AI Inference Server	Affected	No fix yet: Fix deferred
Red Hat Ansible Automation Platform 2	Affected	No fix yet: Fix deferred
Red Hat Ansible Automation Platform Ansible Core 2	Affected	No fix yet: Fix deferred
Red Hat Discovery 2	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux AI (RHEL AI) 3	Affected	No fix yet: Fix deferred
Red Hat Lightspeed Services for OCP	Affected	No fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)	Affected	No fix yet: Fix deferred
Red Hat Satellite 6	Affected	No fix yet: Fix deferred
Red Hat Update Infrastructure 4 for Cloud Providers	Affected	No fix planned: Out of support scope
Red Hat AI Inference Server 3.5	Fixed	RHSA-2026:94702, RHSA-2026:94709, RHSA-2026:94715, RHSA-2026:94717, RHSA-2026:94721, RHSA-2026:94738

Timeline

2026-10-19 Threatist record created from CVE-2026-111065
2026-10-20 Affected versions changed · Red Hat
2026-10-20 CVSS score added · Red Hat
2026-10-21 Alias added: GHSA-6cjc-53gc-5rqm
2026-10-21 Fix available: PyPI/[email protected] · GHSA-6cjc-53gc-5rqm
2026-10-21 CVSS score added · GHSA-6cjc-53gc-5rqm
2026-10-21 Weakness changed · GHSA-6cjc-53gc-5rqm
2026-10-21 5 new references · GHSA-6cjc-53gc-5rqm
2026-11-04 Fix available: RHSA-2026:94717 · Red Hat
2026-11-04 Fix available: RHSA-2026:94715 · Red Hat
2026-11-04 Fix available: RHSA-2026:94709 · Red Hat
2026-11-04 Fix available: RHSA-2026:94738 · Red Hat
2026-11-04 Fix available: RHSA-2026:94702 · Red Hat
2026-11-04 Fix available: RHSA-2026:94721 · Red Hat
2026-11-04 Fix available: Red Hat AI Inference Server 3.5 · Red Hat

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-111065

Other 4

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