---
id: GHSA-2g87-pp6c-29x5
title: 'aiohttp: Multiple instances of excessive or unbounded memory/CPU use'
summary: 'aiohttp: Multiple instances of excessive or unbounded memory/CPU use'
severity: high
cwe:
  - CWE-770
vendor: aiohttp
product: aiohttp
ecosystem: pip
affected:
  - aiohttp <= 3.14.3
patched:
  - aiohttp 3.14.4
published: '2026-10-19'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T17:07:24Z'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-2g87-pp6c-29x5'
references:
  - url: >-
      https://github.com/aio-libs/aiohttp/security/advisories/GHSA-2g87-pp6c-29x5
  - url: >-
      https://github.com/aio-libs/aiohttp/commit/09bcaa73ff084a0c539bbf16a0a78743acb7141f
  - url: >-
      https://github.com/aio-libs/aiohttp/commit/0ae507423f681161efa77d20052b4054397c7fb6
  - url: >-
      https://github.com/aio-libs/aiohttp/commit/3d850ee9b92573c7e913821cbcb96005beb3f4df
  - url: >-
      https://github.com/aio-libs/aiohttp/commit/47babd8c23ca79e2bae6cc8dcb5752b61e369fc7
  - url: >-
      https://github.com/aio-libs/aiohttp/commit/615fec3d4f088f30d2ee72cad760152e92aa1c53
  - url: >-
      https://github.com/aio-libs/aiohttp/commit/6963ee0befec1502b6bb7b4db6c72d044c08f4fa
  - url: >-
      https://github.com/aio-libs/aiohttp/commit/6a4f6682817839313b04b8e5cea2b39c1a88ab4f
  - url: >-
      https://github.com/aio-libs/aiohttp/commit/8cfbe9abe5e11b84006a10f9bdf82bf607671dab
  - url: >-
      https://github.com/aio-libs/aiohttp/commit/a555ab698e08e9baea7386d5b4c0761cb8956fdd
  - url: >-
      https://github.com/aio-libs/aiohttp/commit/c6ac0e44c3c573ff9616f4a6a532992538b31e43
  - url: >-
      https://github.com/aio-libs/aiohttp/commit/d925a80539ffd227da1d93ab4a5bff123cc777db
  - url: 'https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4'
  - url: 'https://github.com/advisories/GHSA-2g87-pp6c-29x5'
tags:
  - ghsa
  - pip
ingestedAt: '2026-10-19T17:33:42.442Z'
---

## Overview

### Summary

Multiple cases were found where aiohttp could use excessive or unbounded memory, or excessive CPU consumption on attacker controlled requests.

### Impact

An attacker could cause resource exhaustion through specially crafted requests.

## Affected packages

- `aiohttp <= 3.14.3`

## Remediation

Upgrade to a patched release:

- `aiohttp 3.14.4`