The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2022:0265 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

      CVE-2022-45060:
      An HTTP Request Forgery issue was discovered in Varnish Cache 5.x and 6.x before 6.0.11, 7.x before     7.1.2, and 7.2.x before 7.2.1. An attacker may introduce characters through HTTP/2 pseudo-headers that are     invalid in the context of an HTTP/1 request line, causing the Varnish server to produce invalid HTTP/1     requests to the backend. This could, in turn, be used to exploit vulnerabilities in a server behind the     Varnish server. Note: the 6.0.x LTS series (before 6.0.11) is affected.

      CVE-2021-36740:
      Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL authorization bypass via a large     Content-Length header for a POST request. This affects Varnish Enterprise 6.0.x before 6.0.8r3, and     Varnish Cache 5.x and 6.x before 6.5.2, 6.6.x before 6.6.1, and 6.0 LTS before 6.0.8.

Tenable has extracted the preceding description block directly from the Tencent 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 Debian 10 / 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5088 advisory.

  - Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL authorization bypass via a large     Content-Length header for a POST request. This affects Varnish Enterprise 6.0.x before 6.0.8r3, and     Varnish Cache 5.x and 6.x before 6.5.2, 6.6.x before 6.6.1, and 6.0 LTS before 6.0.8. (CVE-2021-36740)

  - In Varnish Cache before 6.6.2 and 7.x before 7.0.2, Varnish Cache 6.0 LTS before 6.0.10, and and Varnish     Enterprise (Cache Plus) 4.1.x before 4.1.11r6 and 6.0.x before 6.0.9r4, request smuggling can occur for     HTTP/1 connections. (CVE-2022-23959)

Note that Nessus has not tested for this issue 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 a vulnerability as referenced in the RHSA-2021:2988 advisory.

    Varnish Cache is a high-performance HTTP accelerator. It stores web pages in memory so web servers don't     have to create the same web page over and over again, giving the website a significant speed up.

    Security Fix(es):

    * varnish: HTTP/2 request smuggling attack via a large Content-Length header for a POST request     (CVE-2021-36740)

    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 this issue but has instead relied only on the application's self-reported version number.

The Rocky Linux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ ciqsa-2026_0502 advisory.

    This advisory aggregates security fixes for the varnish SRPM in CIQ LTS 9.2. It addresses 8 CVEs:
    CVE-2022-45060, CVE-2023-44487, CVE-2024-30156, CVE-2017-8807, CVE-2013-4484, and 3 more.

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 Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:2993 advisory.

    Varnish Cache is a high-performance HTTP accelerator. It stores web pages in memory so web servers don't     have to create the same web page over and over again, giving the website a significant speed up.

    The following packages have been upgraded to a later upstream version: rh-varnish6-varnish (6.0.8).

    Security Fix(es):

    * varnish: HTTP/2 request smuggling attack via a large Content-Length header for a POST request     (CVE-2021-36740)

    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 this issue but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CESA-2021:2988 advisory.

  - varnish: HTTP/2 request smuggling attack via a large Content-Length header for a POST request     (CVE-2021-36740)

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

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5474-1 advisory.

    It was dicovered that Varnish Cache did not clear a pointer between the handling of one client request and     the next request within the same connection. A remote attacker could possibly use this issue to obtain     sensitive information. (CVE-2019-20637)

    It was discovered that Varnish Cache could have an assertion failure when a TLS termination proxy uses     PROXY version 2. A remote attacker could possibly use this issue to restart the daemon and cause a     performance loss. (CVE-2020-11653)

    It was discovered that Varnish Cache allowed request smuggling and VCL authorization bypass via a large     Content-Length header for a POST request. A remote attacker could possibly use this issue to obtain     sensitive information. (CVE-2021-36740)

    It was discovered that Varnish Cache allowed request smuggling for HTTP/1 connections. A remote attacker     could possibly use this issue to obtain sensitive information. (CVE-2022-23959)

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 8.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ ciqsa-2026_0273 advisory.

    This advisory aggregates security fixes for the varnish SRPM in CIQ LTS 8.6. It addresses 9 CVEs:
    CVE-2019-20637, CVE-2022-45060, CVE-2023-44487, CVE-2017-8807, CVE-2013-4484, and 4 more.

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.

ID	名稱	產品	系列	已發布	已更新	嚴重性
238812	TencentOS Server 3: varnish (TSSA-2022:0265)	Nessus	Tencent Local Security Checks	2025/6/16	2025/12/5	high
158585	Debian DSA-5088-1 : varnish - security update	Nessus	Debian Local Security Checks	2022/3/4	2022/3/4	critical
152352	RHEL 8 : varnish:6 (RHSA-2021:2988)	Nessus	Red Hat Local Security Checks	2021/8/9	2024/11/7	medium
354216	Rocky Linux 9.2 [CIQ] Security Update: varnish / varnish-devel / varnish-docs Multiple Vulnerabilities (ciqsa-2026_0502)	Nessus	Rocky Linux Local Security Checks	2026/10/1	2026/10/12	medium
152347	RHEL 7 : rh-varnish6-varnish (RHSA-2021:2993)	Nessus	Red Hat Local Security Checks	2021/8/9	2024/11/7	medium
152358	CentOS 8 : varnish:6 (CESA-2021:2988)	Nessus	CentOS Local Security Checks	2021/8/9	2021/8/9	medium
161982	Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : Varnish Cache vulnerabilities (USN-5474-1)	Nessus	Ubuntu Local Security Checks	2022/6/9	2024/8/27	critical
355168	Rocky Linux 8.6 [CIQ] Security Update: varnish / varnish-devel / varnish-docs Multiple Vulnerabilities (ciqsa-2026_0273)	Nessus	Rocky Linux Local Security Checks	2026/10/1	2026/10/13	medium

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