CVE-2026-54273
High
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, no limit was present on the number of pipelined requests that could be queued. An attacker may be able to use pipelined requests to use excessive amounts of memory, potentially leading to DoS. This vulnerability is fixed in 3.14.1.
SeverityHigh
CVSS7.5
Exploit probability—
ProductAiohttp
PublishedJun 22, 2026
First seenJun 22, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- aiohttp aiohttp3.14.1 or later
- aiohttp3.14.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| aiohttp aiohttp | v < 3.14.1 | 3.14.1 |
| aiohttpPyPI | v < 3.14.1 | 3.14.1 |
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