PT-2026-49587 · Pypi · Aiohttp

Published 2026-06-15 · Updated 2026-06-15 · CVE-2026-54273

OSV

CVSS v4.0

6.6

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U

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.

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Patch: https://github.com/aio-libs/aiohttp/commit/dfdfa9d5aad5d21f91c79fb2ceeba0f8046cb6cf

Fix

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2026-54273

GHSA-4FVR-RGM6-GQMC

Affected Products

Aiohttp

References · 4

• https://osv.dev/vulnerability/GHSA-4fvr-rgm6-gqmc · Vendor Advisory
• https://github.com/aio-libs/aiohttp/commit/dfdfa9d5aad5d21f91c79fb2ceeba0f8046cb6cf · Note
• https://github.com/aio-libs/aiohttp · Note
• https://github.com/aio-libs/aiohttp/security/advisories/GHSA-4fvr-rgm6-gqmc · Note