CVE-2026-111065
published 2026-10-19CVE-2026-111065: 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…
PriorityP340medium6.9CVSS 4.0
AVNACLATNPRNUINVCNVINVALSCNSINSANEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
EPSS
0.36%
29.2th percentile
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.
Affected
124 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| aio-libs | aiohttp | < 3.14.4 | 3.14.4 |
| aiohttp | aiohttp | >= 0 < 3.14.4 | 3.14.4 |
| ansible-automation-platform-24 | controller-rhel8 | — | — |
| ansible-automation-platform-24 | lightspeed-rhel8 | — | — |
| ansible-automation-platform-25 | controller-rhel8 | — | — |
| ansible-automation-platform-25 | lightspeed-chatbot-rhel8 | — | — |
| ansible-automation-platform-25 | lightspeed-rhel8 | — | — |
| ansible-automation-platform-26 | ansible-dev-tools-rhel9 | — | — |
| ansible-automation-platform-26 | controller-rhel9 | — | — |
| ansible-automation-platform-26 | de-minimal-rhel9 | — | — |
| ansible-automation-platform-26 | de-supported-rhel9 | — | — |
| ansible-automation-platform-26 | ee-minimal-rhel9 | — | — |
| ansible-automation-platform-26 | ee-supported-rhel9 | — | — |
| ansible-automation-platform-26 | hub-rhel9 | — | — |
| ansible-automation-platform-26 | lightspeed-chatbot-rhel9 | — | — |
| ansible-automation-platform-26 | lightspeed-rhel9 | — | — |
| ansible-automation-platform-26 | platform-resource-runner-rhel9 | — | — |
| ansible-automation-platform-27 | controller-rhel9 | — | — |
| ansible-automation-platform-27 | de-minimal-rhel9 | — | — |
| ansible-automation-platform-27 | de-supported-rhel9 | — | — |
| ansible-automation-platform-27 | ee-control-plane-rhel9 | — | — |
| ansible-automation-platform-27 | ee-minimal-rhel9 | — | — |
| ansible-automation-platform-27 | ee-supported-rhel9 | — | — |
| ansible-automation-platform-27 | hub-rhel9 | — | — |
| ansible-automation-platform-27 | lightspeed-chatbot-rhel9 | — | — |
CVSS provenance
nvdv4.06.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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
vendor_redhat6.9MEDIUM
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Red Hat
aiohttp: aiohttp: Denial of Service via Max-Age processing overflow
vendor_redhat·2026-10-19·CVSS 6.9
CVE-2026-111065 [MEDIUM] CWE-772 aiohttp: aiohttp: Denial of Service via Max-Age processing overflow
aiohttp: aiohttp: Denial of Service via Max-Age processing overflow
A flaw was found in aiohttp. An integer overflow in the processing of HTTP Max-Age directives can prevent connections from closing as intended. A remote attacker could exploit this vulnerability to exhaust the connection pool, leading to a temporary Denial of Service (DoS).
Package: exploit-intelligence/vulnerability-analysis-rhel9 (Exploit Intelligence) - Out of support scope
Package: lightspeed-core/lightspeed-stack-rhel9 (Lightspeed Core) - Fix deferred
Package: lightspeed-core/rag-tool-cpu-rhel9 (Lightspeed Core) - Fix deferred
Package: lightspeed-core/rag-tool-cuda-12.9-rhel9 (Lightspeed Core) - Fix deferred
Package: mta/mta-solution-server-rhel9 (Migration Toolkit for Applications 8) - Fix deferred
Package: op
GHSA
AIOHTTP: Connector pool exhaustion via Max-Age overflow
ghsa·2026-10-20
CVE-2026-111065 [MEDIUM] CWE-770 AIOHTTP: Connector pool exhaustion via Max-Age overflow
AIOHTTP: Connector pool exhaustion via Max-Age overflow
### Summary
An overflow in Max-Age processing can skip closing a connection.
### Impact
An attacker may be able to exhaust the connection pool temporarily, until garbage collection resolves the connections.
No detection rules found.
No public exploits indexed.
2026-10-19
Published