---
schema_version: '1.0'
id: security-20260714-aee7ef
url: https://osv.dev/vulnerability/PYSEC-2026-2096
url_hash: aee7ef197ae973052cccd9c7d4e898e1848dd2587c043b63e2acfacba1faa9f9
canonical_url: https://osv.dev/vulnerability/PYSEC-2026-2096
source: osv:pypa
category: security/library
category_raw: cve/library
region: null
tags:
- cve
- CVE-2026-34514
- PYSEC-2026-2096
- severity:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- aiohttp
- PyPI
lang: en
published_at: '2026-04-01T21:16:59Z'
fetched_at: '2026-07-14T06:42:23Z'
updated_at: '2026-07-14T06:42:55Z'
status: published
content_hash: bef584490ed4fbf1709884ff5043975fc921e3b1b24c560a3fcbda48405fcc19
license_note: full
summary: AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python.
  Prior to version 3.13.4, an attacker who controls the content_type parameter in
  aiohttp could use this to inject extra headers or similar exploits. This issue has
  been patched in version 3.13.4.
summary_source: rss
summary_en: AIOHTTP is an asynchronous HTTP client/server framework for asyncio and
  Python. Prior to version 3.13.4, an attacker who controls the content_type parameter
  in aiohttp could use this to inject extra headers or similar exploits. This issue
  has been patched in version 3.13.4.
entities: []
key_facts: []
related: []
related_auto: []
title: CVE-2026-34514 — aiohttp
---

# CVE-2026-34514 — aiohttp

## TL;DR
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an attacker who controls the content_type parameter in aiohttp could use this to inject extra headers or similar exploits. This issue has been patched in version 3.13.4.

## Key Points
- cve / CVE-2026-34514 / PYSEC-2026-2096 / severity:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N / aiohttp / PyPI

## Details
**Severity:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
**Advisory:** PYSEC-2026-2096 (CVE-2026-34514)

**Affected (your watchlist):**
- `PyPI:aiohttp` 3.13.3 → fixed in 3.13.4 [docker/docker-strands]

**Details:**
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an attacker who controls the content_type parameter in aiohttp could use this to inject extra headers or similar exploits. This issue has been patched in version 3.13.4.

**References:**
- https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4
- https://github.com/aio-libs/aiohttp/commit/9a6ada97e2c6cf1ce31727c6c9fcea17c21f6f06
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-2vrm-gr82-f7m5

_Data: OSV.dev (upstream: pypa) — https://osv.dev/vulnerability/PYSEC-2026-2096_

## Source
元記事: [CVE-2026-34514 — aiohttp](https://osv.dev/vulnerability/PYSEC-2026-2096) — published 2026-04-01T21:16:59Z