Is CVE-2023-49081 actively exploited?

CVE-2023-49081 has no public evidence of in-the-wild exploitation as of 2025-11-04.

What is the CVSS score for CVE-2023-49081?

CVE-2023-49081 has a CVSS score of 7.2 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

How do I patch CVE-2023-49081?

Patch guidance is available from aiohttp security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2023-49081.

Fix CVE-2023-49081 - HIGH aiohttp aiohttp

Description

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Improper validation made it possible for an attacker to modify the HTTP request (e.g. to insert a new header) or create a new HTTP request if the attacker controls the HTTP version. The vulnerability only occurs if the attacker can control the HTTP version of the request. This issue has been patched in version 3.9.0.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: changed
Confidentiality: low
Integrity: low
Availability: none
Weaknesses: CWE-20 · Improper Input ValidationNVD-CWE-Other

Metadata

Primary Vendor: AIOHTTP
Published: 11/30/2023
Last Modified: 11/4/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

aiohttp : aiohttp

Remediation Guidance

Executive Summary

Cite this page

CVE-2023-49081. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2023-49081

View on NIST NVD

CVE-2023-49081 vulnerability