Tornado before 6.4.1 ignores duplicate Transfer-Encoding: chunked headers, treating requests as having no message body and parsing the chunked body as a subsequent request. Attackers can exploit this inconsistency when Tornado is deployed behind proxies to perform HTTP request smuggling, enabling access control bypass, cache poisoning, or connection desynchronization.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-147004 advisory.

    Tornado before 6.4.1 ignores duplicate Transfer-Encoding: chunked headers, treating requests as having no     message body and parsing the chunked body as a subsequent request. Attackers can exploit this     inconsistency when Tornado is deployed behind proxies to perform HTTP request smuggling, enabling access     control bypass, cache poisoning, or connection desynchronization.

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

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

The CentOS Linux 8.4 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS8.4:CLSA-2026:1793141050 advisory.

  - Sinatra before 2.2.0 does not validate that the expanded path matches public_dir when serving static     files. (CVE-2022-29970)

  - Tornado before 6.4.1 ignores duplicate Transfer-Encoding: chunked headers, treating requests as having no     message body and parsing the chunked body as a subsequent request. Attackers can exploit this     inconsistency when Tornado is deployed behind proxies to perform HTTP request smuggling, enabling access     control bypass, cache poisoning, or connection desynchronization. (CVE-2024-14029)

  - Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.8, Tornado parses     application/x-www-form-urlencoded request bodies with urllib.parse.parse_qs in tornado/escape.py without     passing max_num_fields. RequestHandler._execute in tornado/web.py parses the body before handler dispatch     through HTTPServerRequest._parse_body and parse_body_arguments in tornado/httputil.py, so an     unauthenticated request body containing millions of separator-delimited fields can synchronously stall the     single-threaded event loop and delay every connection. The body is bounded only by max_buffer_size, which     defaults to 104857600 bytes. This issue is fixed in version 6.5.8. (CVE-2026-82397)

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

The CentOS Linux 8.5 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS8.5:CLSA-2026:1793141203 advisory.

  - Sinatra before 2.2.0 does not validate that the expanded path matches public_dir when serving static     files. (CVE-2022-29970)

  - Tornado before 6.4.1 ignores duplicate Transfer-Encoding: chunked headers, treating requests as having no     message body and parsing the chunked body as a subsequent request. Attackers can exploit this     inconsistency when Tornado is deployed behind proxies to perform HTTP request smuggling, enabling access     control bypass, cache poisoning, or connection desynchronization. (CVE-2024-14029)

  - Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.8, Tornado parses     application/x-www-form-urlencoded request bodies with urllib.parse.parse_qs in tornado/escape.py without     passing max_num_fields. RequestHandler._execute in tornado/web.py parses the body before handler dispatch     through HTTPServerRequest._parse_body and parse_body_arguments in tornado/httputil.py, so an     unauthenticated request body containing millions of separator-delimited fields can synchronously stall the     single-threaded event loop and delay every connection. The body is bounded only by max_buffer_size, which     defaults to 104857600 bytes. This issue is fixed in version 6.5.8. (CVE-2026-82397)

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

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS / 26.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8952-1 advisory.

    It was discovered that Tornado did not properly handle certain HTTP requests and network inputs. An     attacker could possibly use these issues to cause a denial of service, expose sensitive information, or     bypass access controls.

    (CVE-2023-54397, CVE-2024-14029, CVE-2026-91990, CVE-2026-91992, CVE-2026-103262, CVE-2026-103263)

Tenable has extracted the preceding description block directly from the Ubuntu 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 Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2026_84798 advisory.

    * python-tornado: Tornado: Denial of Service via excessive URL-encoded body fields (CVE-2026-82397)

    * python-tornado: Tornado before 6.4.1 HTTP Request Smuggling via Transfer-Encoding (CVE-2024-14029)

Tenable has extracted the preceding description block directly from the CIQ 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 Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-84798 advisory.

    [0.10.18-2.0.1.el8_10.10]
    - Replaced HAM-logo

    [0.10.18-2.el8_10.10]
    - Fixed CVE-2026-82397, CVE-2024-14029 by patching bundled Tornado       Resolves: RHEL-271884, RHEL-271929

Tenable has extracted the preceding description block directly from the Oracle Linux 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 RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:84798 advisory.

    * python-tornado: Tornado: Denial of Service via excessive URL-encoded body fields (CVE-2026-82397)

    * python-tornado: Tornado before 6.4.1 HTTP Request Smuggling via Transfer-Encoding (CVE-2024-14029)

Tenable has extracted the preceding description block directly from the RockyLinux 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 MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-2102:08 advisory.

    * python-tornado: Tornado: Denial of Service via excessive URL-encoded body fields (CVE-2026-82397)
      * python-tornado: Tornado before 6.4.1 HTTP Request Smuggling via Transfer-Encoding (CVE-2024-14029)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:84798 advisory.

    * python-tornado: Tornado: Denial of Service via excessive URL-encoded body fields (CVE-2026-82397)
      * python-tornado: Tornado before 6.4.1 HTTP Request Smuggling via Transfer-Encoding (CVE-2024-14029)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:84844 advisory.

    The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.

    Security Fix(es):

    * python-tornado: Tornado: Denial of Service via excessive URL-encoded body fields (CVE-2026-82397)

    * python-tornado: Tornado before 6.4.1 HTTP Request Smuggling via Transfer-Encoding (CVE-2024-14029)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:84843 advisory.

    The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.

    Security Fix(es):

    * python-tornado: Tornado: Denial of Service via excessive URL-encoded body fields (CVE-2026-82397)

    * python-tornado: Tornado before 6.4.1 HTTP Request Smuggling via Transfer-Encoding (CVE-2024-14029)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:84798 advisory.

    The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.

    Security Fix(es):

    * python-tornado: Tornado: Denial of Service via excessive URL-encoded body fields (CVE-2026-82397)

    * python-tornado: Tornado before 6.4.1 HTTP Request Smuggling via Transfer-Encoding (CVE-2024-14029)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:85135 advisory.

    The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.

    Security Fix(es):

    * python-tornado: Tornado: Denial of Service via excessive URL-encoded body fields (CVE-2026-82397)

    * python-tornado: Tornado before 6.4.1 HTTP Request Smuggling via Transfer-Encoding (CVE-2024-14029)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Tornado before 6.4.1 ignores duplicate Transfer-Encoding: chunked headers, treating requests as having no     message body and parsing the chunked body as a subsequent request. Attackers can exploit this     inconsistency when Tornado is deployed behind proxies to perform HTTP request smuggling, enabling access     control bypass, cache poisoning, or connection desynchronization. (CVE-2024-14029)

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

ID	Name	Product	Family	Type	Severity
373798	Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: pcs (UTSA-2026-147004)	Nessus	Unity Linux Local Security Checks	Local	critical
372651	CentOS Linux 8.4 [TuxCare] Security Update: pcs / pcs-snmp Multiple Vulnerabilities (CENTOS8.4:CLSA-2026:1793141050)	Nessus	CentOS Local Security Checks	Local	critical
372648	CentOS Linux 8.5 [TuxCare] Security Update: pcs / pcs-snmp Multiple Vulnerabilities (CENTOS8.5:CLSA-2026:1793141203)	Nessus	CentOS Local Security Checks	Local	critical
371124	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS / 26.10 : Tornado vulnerabilities (USN-8952-1)	Nessus	Ubuntu Local Security Checks	Local	critical
369927	Rocky Linux 8 [CIQ] Security Update: pcs / pcs-snmp Multiple Vulnerabilities (crlsa-2026_84798)	Nessus	Rocky Linux Local Security Checks	Local	critical
368004	Oracle Linux 8 : pcs (ELSA-2026-84798)	Nessus	Oracle Linux Local Security Checks	Local	critical
367801	RockyLinux 8 : pcs (RLSA-2026:84798)	Nessus	Rocky Linux Local Security Checks	Local	critical
367768	MiracleLinux 8 : pcs-0.10.18-2.el8_10.10.ML.1 (AXSA:2026-2102:08)	Nessus	Miracle Linux Local Security Checks	Local	critical
367390	AlmaLinux 8 : pcs (ALSA-2026:84798)	Nessus	Alma Linux Local Security Checks	Local	critical
367287	RHEL 8 : pcs (RHSA-2026:84844)	Nessus	Red Hat Local Security Checks	Local	critical
367286	RHEL 8 : pcs (RHSA-2026:84843)	Nessus	Red Hat Local Security Checks	Local	critical
367279	RHEL 8 : pcs (RHSA-2026:84798)	Nessus	Red Hat Local Security Checks	Local	critical
367271	RHEL 8 : pcs (RHSA-2026:85135)	Nessus	Red Hat Local Security Checks	Local	critical
346309	Linux Distros Unpatched Vulnerability : CVE-2024-14029	Nessus	Misc.	Local	critical

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