AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, on Windows the static resource handler may expose information about a NTLMv2 remote path. This issue has been patched in version 3.13.4.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4,
    on Windows the static resource handler may expose information about a NTLMv2 remote path. This issue has
    been patched in version 3.13.4. (CVE-2026-34515)

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. Prior to version 3.13.4,     on Windows the static resource handler may expose information about a NTLMv2 remote path. This issue has     been patched in version 3.13.4. (CVE-2026-34515)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of aioHTTP installed on the remote host is prior to 3.13.4. It is, therefore, affected by a request smuggling vulnerability:

  - AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4,     insufficient restrictions in header/trailer handling could cause uncapped memory usage. This issue has     been patched in version 3.13.4. (CVE-2026-22815)

  - AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4,     a response with an excessive number of multipart headers may be allowed to use more memory than intended,     potentially allowing a DoS vulnerability. This issue has been patched in version 3.13.4. (CVE-2026-34516)

  - AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4,     multiple Host headers were allowed in aiohttp. This issue has been patched in version 3.13.4.     (CVE-2026-34525)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
462013	Echo: aiohttp: security update to 3.13.3+echo.3	Tenable Cloud Security	Echo Local Security Checks	Local	high
462013	Echo: aiohttp: security update to 3.13.3+echo.3	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	high
305189	Linux Distros Unpatched Vulnerability : CVE-2026-34515	Nessus	Misc.	Local	high
304811	aioHTTP < 3.13.4 Multiple Vulnerabilities (CVE-2026-22815)	Nessus	Misc.	Local	high
439657	SCA: security update for aiohttp (GHSA-p998-jp59-783m)	Tenable Cloud Security	SCA Checks	Local	high
439657	SCA: security update for aiohttp (GHSA-p998-jp59-783m)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-34515

high

Tenable Plugins

high

high

high

high

high

high