CVE-2023-49082

aiohttp's ClientSession is vulnerable to CRLF injection via method

Published Nov 29, 2023 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4041-1 python-aiohttp security update
Debian DSA Debian DSA DSA-5828-1 python-aiohttp security update
EUVD EUVD EUVD-2023-0007 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.
Github GHSA Github GHSA GHSA-qvrw-v9rv-5rjx aiohttp's ClientSession is vulnerable to CRLF injection via method
Ubuntu USN Ubuntu USN USN-7642-1 AIOHTTP vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jun 23, 2026, 5:19 PM
Reserved
Nov 21, 2023, 6:57 PM
Status
Modified
Published
Nov 29, 2023, 8:15 PM
Modified
Jun 23, 2026, 6:17 PM
Severity
Low
Public date
Nov 29, 2023, 12:00 AM