# CVE-2023-49082: python-aiohttp: aiohttp is an asynchronous HTTP client/server framework for asyncio and Python

CVE-2023-49082 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2023-49082, released November 29, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-49082
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0095
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 29, 2023

## Description

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Improper validation makes it possible for an attacker to modify the HTTP request (e.g. insert a new header) or even create a new HTTP request if the attacker controls the HTTP method. The vulnerability occurs only if the attacker can control the HTTP method (GET, POST etc.) of the request. If the attacker can control the HTTP version of the request it will be able to modify the request (request smuggling). This issue has been patched in version 3.9.0.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python-aiohttp Debian 12.15 (bookworm) | 3.8.4-1+deb12u1 | [DEBIAN-CVE-2023-49082](https://patchblox.com/security/data/fix/linux/debian-cve-2023-49082.md) | Nov 29, 2023 |
| Linux | python-aiohttp Debian 13.5 (trixie) | 3.9.1-1 | [DEBIAN-CVE-2023-49082](https://patchblox.com/security/data/fix/linux/debian-cve-2023-49082.md) | Nov 29, 2023 |
| Linux | python-aiohttp Debian 14 | 3.9.1-1 | [DEBIAN-CVE-2023-49082](https://patchblox.com/security/data/fix/linux/debian-cve-2023-49082.md) | Nov 29, 2023 |
| Linux | python3-aiohttp Ubuntu 18.04.6 LTS (bionic) | 3.0.1-1ubuntu0.1~esm5 | [python3-aiohttp 3.0.1-1ubuntu0.1~esm5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-aiohttp-3.0.1-1ubuntu0.1-esm5.md) | Nov 18, 2024 |
| Linux | python3-aiohttp Ubuntu 22.04.1 LTS (jammy) | 3.8.1-4ubuntu0.2+esm1 | [python3-aiohttp 3.8.1-4ubuntu0.2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-python3-aiohttp-3.8.1-4ubuntu0.2-esm1.md) | Nov 18, 2024 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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