python-aiohttp: AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python
CVE-2025-53643 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2025-53643, released July 14, 2025. It is not reported as exploited. Patch Radar priority: High.
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.12.14, the Python parser is vulnerable to a request smuggling vulnerability due to not parsing trailer sections of an HTTP request. If a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or AIOHTTP_NO_EXTENSIONS is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections. Version 3.12.14 contains a patch for this issue.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-Brotli · opensuse-leap 16.0 | 1.1.0-160000.3.1 | OPENSUSE-SU-2026:20204-1 | Feb 12, 2026 |
| python-Brotli · sles 16.0 | 1.1.0-160000.3.1 | SUSE-SU-2026:20425-1 | Feb 12, 2026 |
| python-aiohttp · Debian 12.15 (bookworm) | 3.8.4-1+deb12u2 | DEBIAN-CVE-2025-53643 | Jul 14, 2025 |
| python-aiohttp · Debian 14 | 3.12.15-1 | DEBIAN-CVE-2025-53643 | Jul 14, 2025 |
| python-aiohttp · opensuse-leap 15.6 | 3.9.3-150400.10.33.1 | SUSE-SU-2025:03057-1 | Sep 3, 2025 |
| python-aiohttp · opensuse-leap 16.0 | 3.11.16-160000.3.1 | OPENSUSE-SU-2026:20204-1 | Feb 12, 2026 |
| python-aiohttp · sles 15.6 | 3.6.0-150100.3.27.1 | SUSE-SU-2025:03201-1 | Sep 12, 2025 |
| python-aiohttp · sles 15.7 | 3.6.0-150100.3.27.1 | SUSE-SU-2025:03201-1 | Sep 12, 2025 |
| python-aiohttp · sles 16.0 | 3.11.16-160000.3.1 | SUSE-SU-2026:20425-1 | Feb 12, 2026 |
| python39-oci-sdk · ol 9 | 0:2.187.0-1.0.5.el9 | ELSA-2026-604898 | Nov 7, 2026 |
| python39-oci-sdk-docs · ol 9 | 0:2.187.0-1.0.5.el9 | ELSA-2026-604898 | Nov 7, 2026 |
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