Report: CVE-2026-34519 - AIOHTTP: HTTP response splitting via \r in reason phrase

Report: CVE-2026-34519 - AIOHTTP: HTTP response splitting via \r in reason phrase

CVE ID :CVE-2026-34519 Published : April 1, 2026, 8:26 p.m. | 29 minutes ago Description :AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an attacker who controls the reason parameter when creating a Response may be able to inject extra headers or similar exploits. This issue has been patched in version 3.13.4. Severity: 0.0 | NA Visit the link for more details, such as CVSS details, affected products, timeline, and more...

CVE Details

Published
April 1, 2026
Affected Product: Python