---
id: GHSA-pjjw-qhg8-p2p9
title: aiohttp has vulnerable dependency that is vulnerable to request smuggling
summary: aiohttp has vulnerable dependency that is vulnerable to request smuggling
severity: medium
vendor: aiohttp
product: aiohttp
ecosystem: pip
affected:
  - aiohttp < 3.8.6
patched:
  - aiohttp 3.8.6
published: '2023-11-27'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:50:04.355249499Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-pjjw-qhg8-p2p9'
references:
  - url: >-
      https://github.com/aio-libs/aiohttp/security/advisories/GHSA-pjjw-qhg8-p2p9
  - url: >-
      https://github.com/aio-libs/aiohttp/commit/996de2629ef6b4c2934a7c04dfd49d0950d4c43b
  - url: >-
      https://github.com/aio-libs/aiohttp/commit/bcc416e533796d04fb8124ef1e7686b1f338767a
  - url: 'https://github.com/aio-libs/aiohttp'
tags:
  - osv
  - pip
ingestedAt: '2026-09-12T03:13:01.716Z'
---

## Overview

### Summary
llhttp 8.1.1 is vulnerable to two request smuggling vulnerabilities.
Details have not been disclosed yet, so refer to llhttp for future information.
The issue is resolved by using llhttp 9+ (which is included in aiohttp 3.8.6+).

## Affected packages

- `aiohttp < 3.8.6`

## Remediation

Upgrade to a patched release:

- `aiohttp 3.8.6`