GitHub Advisoryadvisory · PyPI

GHSA-4fvr-rgm6-gqmc aiohttp: HTTP/1 Pipelined Requests Queue Without Limit

MEDIUM Published 2026-06-15 Modified 2026-06-15 Official page ↗

Aliases: CVE-2026-54273
Ecosystem: PyPI
Packages: aiohttp
Severity: Moderate
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
Weaknesses: CWE-770
Reviewed: 2026-06-15

Affected packages

• PyPI aiohttp: < 3.14.1 → fixed in 3.14.1

Description

Summary No limit was present on the number of pipelined requests that could be queued. Impact An attacker may be able to use pipelined requests to use excessive amounts of memory, potentially leading to DoS. ----- Patch: https://github.com/aio-libs/aiohttp/commit/dfdfa9d5aad5d21f91c79fb2ceeba0f8046cb6cf

Related

Alias · CVE (1)

CVE-2026-54273 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. vulnerability

Weakness · CWE (1)

CWE-770 Allocation of Resources Without Limits or Throttling weakness

References