---
id: CVE-2026-54276
title: AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python
summary: >-
  AIOHTTP is an asynchronous HTTP client/server framework for asyncio and
  Python. Prior to 3.14.1, DigestAuthMiddleware can send an authentication
  response after following a cross-origin redirect. This likely requires an open
  redirect vuln…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-200
  - CWE-522
  - CWE-601
vendor: aiohttp
product: aiohttp
affected:
  - 'aiohttp >= 3.12.0, < 3.14.1'
patched:
  - aiohttp 3.14.1
published: '2026-06-22'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:06:03.037'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54276'
references:
  - url: >-
      https://github.com/aio-libs/aiohttp/commit/38d16060037e1bfcd6d677abababa3c2a4bb58fa
    label: security-advisories@github.com
  - url: >-
      https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hpj7-wq8m-9hgp
    label: security-advisories@github.com
  - url: 'https://github.com/aio-libs/aiohttp'
  - url: 'https://github.com/advisories/GHSA-hpj7-wq8m-9hgp'
tags:
  - nvd
  - osv
  - pip
  - ghsa
epss: 0.00307
epssPercentile: 0.20825
aliases:
  - GHSA-hpj7-wq8m-9hgp
  - PYSEC-2026-2109
ecosystem: pip
ingestedAt: '2026-07-07T15:41:58.692Z'
---

## Overview

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, DigestAuthMiddleware can send an authentication response after following a cross-origin redirect. This likely requires an open redirect vulnerability or similar on the target domain for an attacker to be able to execute. Further, the attacker is only receiving the digest, so should only be able to extract the user's credentials if the cryptography is weak or there is some kind of password reuse. This vulnerability is fixed in 3.14.1.

## Affected

- `aiohttp >= 3.12.0, < 3.14.1`

## Remediation

Upgrade past the affected range:

- `aiohttp 3.14.1`

## Package advisory (CVE-2026-54276)

Affected packages:

- `aiohttp < 3.14.1`

Patched in:

- `aiohttp 3.14.1`

Source: https://osv.dev/vulnerability/GHSA-hpj7-wq8m-9hgp