CVE-2026-111750
Medium
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the pure Python parser accepts ambiguous HTTP request framing. An unauthenticated attacker can consequently smuggle requests when an application uses AIOHTTP_NO_EXTENSIONS or otherwise runs without a standard wheel and an intermediary interprets the framing differently. This issue is fixed in version 3.14.4.
SeverityMedium
CVSS6.3
Exploit probability—
ProductAiohttp
PublishedOct 19, 2026
First seenOct 19, 2026
Weakness typeCWE-444CWE-444
How to fix
Update
- aiohttp3.14.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| aiohttpPyPI | v < 3.14.4 | 3.14.4 |
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