PT-2026-29609

Name of the Vulnerable Software and Affected Versions AIOHTTP versions prior to 3.13.4 Description The C parser, used by default in most installations, allowed null bytes and control characters within response headers. An attacker could leverage this to send header values that are interpreted...

PT-2026-29606

Name of the Vulnerable Software and Affected Versions AIOHTTP versions prior to 3.13.4 Description Prior to version 3.13.4, AIOHTTP, an asynchronous HTTP client/server framework for asyncio and Python, read the entire multipart form field into memory before checking the client max size limit. Thi...

Security update for python-aiohttp

This update for python-aiohttp fixes the following issues: CVE-2025-69228: Fixed denial of service through large payloads bsc1256022. CVE-2025-69226: Fixed brute-force leak of internal static file path components bsc1256020. CVE-2025-69224: Fixed unicode processing of header values could cause...

PT-2026-29605

Name of the Vulnerable Software and Affected Versions AIOHTTP versions prior to 3.13.4 Description A response with an excessive number of multipart headers may be allowed to use more memory than intended, potentially leading to a denial-of-service condition. Multipart headers were not subject to...

PT-2026-29608

Name of the Vulnerable Software and Affected Versions AIOHTTP versions prior to 3.13.4 Description AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. An attacker controlling the reason parameter when creating a Response may inject extra headers or similar exploits. Th...

CVE-2025-69228

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below allow a request to be crafted in such a way that an AIOHTTP server's memory fills up uncontrollably during processing. If an application includes a handler that uses the Request.post method, ...

CVE-2025-69229

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. In versions 3.13.2 and below, handling of chunked messages can result in excessive blocking CPU usage when receiving a large number of chunks. If an application makes use of the request.read method in an endpoint, it...

Linux Distros Unpatched Vulnerability : CVE-2025-69227

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below allow for an infinite loop to occur when assert...

Linux Distros Unpatched Vulnerability : CVE-2025-69224

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below of the Python HTTP parser may allow a request smugglin...

CVE-2025-69227 AIOHTTP vulnerable to DoS when bypassing asserts

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below allow for an infinite loop to occur when assert statements are bypassed, resulting in a DoS attack when processing a POST body. If optimizations are enabled -O or PYTHONOPTIMIZE=1, and the...

CVE-2025-69227

CVE-2025-69227 affects AIOHTTP (async HTTP client/server for asyncio) with vulnerable versions 3.13.2 and earlier. The issue is an infinite loop that can trigger a DoS when assert statements are bypassed during POST body processing; if optimizations are enabled (-O or PYTHONOPTIMIZE=1) and a hand...

CVE-2025-69227

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below allow for an infinite loop to occur when assert statements are bypassed, resulting in a DoS attack when processing a POST body. If optimizations are enabled -O or PYTHONOPTIMIZE=1, and the...

CVE-2025-69225 AIOHTTP Regex Mismatch Allows Unicode in ASCII-Only Protocol Fields

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below contain parser logic which allows non-ASCII decimals to be present in the Range header. There is no known impact, but there is the possibility that there's a method to exploit a request...

CVE-2025-69225

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below contain parser logic which allows non-ASCII decimals to be present in the Range header. There is no known impact, but there is the possibility that there's a method to exploit a request...

CVE-2025-69226

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below enable an attacker to ascertain the existence of absolute path components through the path normalization logic for static files meant to prevent path traversal. If an application uses...

CVE-2025-69224

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below of the Python HTTP parser may allow a request smuggling attack with the presence of non-ASCII characters. If a pure Python version of AIOHTTP is installed i.e. without the usual C extensions ...

CVE-2025-69226 AIOHTTP allows for a brute-force leak of internal static filepath components

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below enable an attacker to ascertain the existence of absolute path components through the path normalization logic for static files meant to prevent path traversal. If an application uses...

CVE-2025-69224 AIOHTTP's Unicode processing of header values could cause parsing discrepancies

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below of the Python HTTP parser may allow a request smuggling attack with the presence of non-ASCII characters. If a pure Python version of AIOHTTP is installed i.e. without the usual C extensions ...

CVE-2025-69224

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below of the Python HTTP parser may allow a request smuggling attack with the presence of non-ASCII characters. If a pure Python version of AIOHTTP is installed i.e. without the usual C extensions ...

PT-2026-1355

Name of the Vulnerable Software and Affected Versions AIOHTTP versions 3.13.2 and below Description AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Handling of chunked messages in versions 3.13.2 and below can lead to excessive blocking CPU usage when receiving a...