AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.3, an out-of-bounds heap read could occur in the C response parser while building an error message for a malformed response. An attacker controlled server, or possibly an accidental response, could trigger a DoS in the client. The vulnerable path was error message construction in aiohttp/_http_parser.pyx, where an llhttp error-position pointer was used to build a snippet for malformed chunked responses and malformed request or response bytes at the buffer end. This issue is fixed in version 3.14.3.

redhat RHSA-2026:59136: RHSA-2026:59136: Red Hat Ansible Automation Platform 2.6 Product Security and Bug Fix Update (Important)

redhat RHSA-2026:59135: RHSA-2026:59135: Red Hat Ansible Automation Platform 2.5 Product Security and Bug Fix Update (Important)

The remote Fedora 46 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-84f7af8f97 advisory.

    Automatic update for python-aiohttp-3.14.3-3.fc46.

    ##### **Changelog**

    ```
    * Mon Aug 24 2026 Benjamin A. Beasley <code@musicinmybrain.net> - 3.14.3-3
    - Preemptively patch for Cython 3.3 compatibility
    * Mon Aug 24 2026 Benjamin A. Beasley <code@musicinmybrain.net> - 3.14.3-2
    - Remove a test skip thats no longer needed
    * Thu Aug 20 2026 Benjamin A. Beasley <code@musicinmybrain.net> - 3.14.3-1
    - Update to 3.14.3
    - Security fix for CVE-2026-34993; fixes RHBZ#2511060
    - Security fix for CVE-2026-59881; fixes RHBZ#2509739
    - Security fix for CVE-2026-69243; fixes RHBZ#2519530
    - Security fix for CVE-2026-69244; fixes RHBZ#2519529
    * Thu Aug 20 2026 Benjamin A. Beasley <code@musicinmybrain.net> - 3.13.5-13
    - Use the provisional pyproject declarative buildsystem

    ```

Tenable has extracted the preceding description block directly from the Fedora security advisory.

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

The remote Fedora 45 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-e76e1f737b advisory.

    Automatic update for python-aiohttp-3.14.3-3.fc45.

    ##### **Changelog**

    ```
    * Mon Aug 24 2026 Benjamin A. Beasley <code@musicinmybrain.net> - 3.14.3-3
    - Preemptively patch for Cython 3.3 compatibility
    * Mon Aug 24 2026 Benjamin A. Beasley <code@musicinmybrain.net> - 3.14.3-2
    - Remove a test skip thats no longer needed
    * Thu Aug 20 2026 Benjamin A. Beasley <code@musicinmybrain.net> - 3.14.3-1
    - Update to 3.14.3
    - Security fix for CVE-2026-34993; fixes RHBZ#2511060
    - Security fix for CVE-2026-59881; fixes RHBZ#2509739
    - Security fix for CVE-2026-69243; fixes RHBZ#2519530
    - Security fix for CVE-2026-69244; fixes RHBZ#2519529
    * Thu Aug 20 2026 Benjamin A. Beasley <code@musicinmybrain.net> - 3.13.5-13
    - Use the provisional pyproject declarative buildsystem

    ```

Tenable has extracted the preceding description block directly from the Fedora security advisory.

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

The version of aiohttp installed on the remote host is prior to 3.14.3. It is, therefore, affected by a denial of service vulnerability:

  - AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.3, an out-of-bounds     heap read could occur in the C response parser while building an error message for a malformed response. An attacker     controlled server, or possibly an accidental response, could trigger a DoS in the client. The vulnerable path was     error message construction in aiohttp/_http_parser.pyx, where an llhttp error-position pointer was used to build a     snippet for malformed chunked responses and malformed request or response bytes at the buffer end. This issue is     fixed in version 3.14.3. (CVE-2026-69244)

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

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 3.14.3, an out-
    of-bounds heap read could occur in the C response parser while building an error message for a malformed
    response. An attacker controlled server, or possibly an accidental response, could trigger a DoS in the
    client. The vulnerable path was error message construction in aiohttp/_http_parser.pyx, where an llhttp
    error-position pointer was used to build a snippet for malformed chunked responses and malformed request
    or response bytes at the buffer end. This issue is fixed in version 3.14.3. (CVE-2026-69244)

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 3.14.3, an out-     of-bounds heap read could occur in the C response parser while building an error message for a malformed     response. An attacker controlled server, or possibly an accidental response, could trigger a DoS in the     client. The vulnerable path was error message construction in aiohttp/_http_parser.pyx, where an llhttp     error-position pointer was used to build a snippet for malformed chunked responses and malformed request     or response bytes at the buffer end. This issue is fixed in version 3.14.3. (CVE-2026-69244)

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

ID	Name	Product	Family	Type	Severity
339122	Fedora 46 : python-aiohttp (2026-84f7af8f97)	Nessus	Fedora Local Security Checks	Local	high
339121	Fedora 45 : python-aiohttp (2026-e76e1f737b)	Nessus	Fedora Local Security Checks	Local	high
333343	aiohttp < 3.14.3 Out-of-bounds Read DoS	Nessus	Misc.	Local	high
445607	SCA: security update for aiohttp (GHSA-cq5v-8q36-5273)	Tenable Cloud Security	SCA Checks	Local	high
445607	SCA: security update for aiohttp (GHSA-cq5v-8q36-5273)	Tenable Self-Hosted Container Security	SCA Checks	Local	high
331893	Linux Distros Unpatched Vulnerability : CVE-2026-69244	Nessus	Misc.	Local	high

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