CVE-2026-54273
HIGHAIOHTTP: HTTP/1 Pipelined Requests Queue Without Limit
Title source: cnaDescription
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.
References (2)
Core 2
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-4fvr-rgm6-gqmc
X_Refsource_Misc x_refsource_misc
https://github.com/aio-libs/aiohttp/commit/dfdfa9d5aad5d21f91c79fb2ceeba0f8046cb6cf
Scores
CVSS v3
7.5
EPSS
0.0028
EPSS Percentile
20.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-770
Status
published
Products (2)
aio-libs/aiohttp
< 3.14.1
aiohttp/aiohttp
< 3.14.1
Published
Jun 22, 2026
Tracked Since
Jun 22, 2026