CVE-2026-54273

EUVD-2026-38317
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 20.05%
Affected Products (NVD)
VendorProductVersion
aiohttpaiohttp
𝑥
< 3.14.1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
python-aiohttp
bookworm
ignored
bookworm (security)
vulnerable
bullseye
ignored
bullseye (security)
vulnerable
forky
3.14.1-4
fixed
sid
3.14.1-4
fixed
trixie
ignored
trixie (security)
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
python-aiohttp
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
questing
ignored
resolute
needs-triage
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
python3-aiohttp
suse enterprise sap 15 SP4
3.6.0-150100.3.38.1
fixed
suse enterprise server 15 SP4
3.6.0-150100.3.38.1
fixed
python311-aiohttp
suse enterprise sap 15 SP4
3.9.3-150400.10.43.1
fixed
suse enterprise server 15 SP4
3.9.3-150400.10.43.1
fixed
Common Weakness Enumeration
References
https://github.com/aio-libs/aiohttp/commit/dfdfa9d5aad5d21f91c79fb2ceeba0f8046cb6cf
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-4fvr-rgm6-gqmc