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

  - Caddy is an extensible server platform that uses TLS by default. From version 2.10.0 to before version
    2.11.2, forward_auth copy_headers does not strip client-supplied headers, allowing identity injection and
    privilege escalation. This issue has been patched in version 2.11.2. (CVE-2026-30851)

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, Caddy's FastCGI
    path splitting logic computes the split index on a lowercased copy of the request path and then uses that
    byte index to slice the original path. This is unsafe for Unicode because `strings.ToLower()` can change
    UTF-8 byte length for some characters. As a result, Caddy can derive an incorrect
    `SCRIPT_NAME`/`SCRIPT_FILENAME` and `PATH_INFO`, potentially causing a request that contains `.php` to
    execute a different on-disk file than intended (path confusion). In setups where an attacker can control
    file contents (e.g., upload features), this can lead to unintended PHP execution of non-.php files
    (potential RCE depending on deployment). Version 2.11.1 fixes the issue. (CVE-2026-27590)

  - Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, the path
    sanitization routine in file matcher doesn't sanitize backslashes which can lead to bypassing path related
    security protections. It affects users with specific Caddy and environment configurations. Version 2.11.1
    fixes the issue. (CVE-2026-27585)

  - Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, two swallowed
    errors in `ClientAuthentication.provision()` cause mTLS client certificate authentication to silently fail
    open when a CA certificate file is missing, unreadable, or malformed. The server starts without error but
    accepts any client certificate signed by any system-trusted CA, completely bypassing the intended private
    CA trust boundary. Any deployment using `trusted_ca_cert_file` or `trusted_ca_certs_pem_files` for mTLS
    will silently degrade to accepting any system-trusted client certificate if the CA file becomes
    unavailable. This can happen due to a typo in the path, file rotation, corruption, or permission changes.
    The server gives no indication that mTLS is misconfigured. Version 2.11.1 fixes the vulnerability.
    (CVE-2026-27586)

  - Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, Caddy's HTTP
    `path` request matcher is intended to be case-insensitive, but when the match pattern contains percent-
    escape sequences (`%xx`) it compares against the request's escaped path without lowercasing. An attacker
    can bypass path-based routing and any access controls attached to that route by changing the casing of the
    request path. Version 2.11.1 contains a fix for the issue. (CVE-2026-27587)

  - Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, Caddy's HTTP
    `host` request matcher is documented as case-insensitive, but when configured with a large host list (>100
    entries) it becomes case-sensitive due to an optimized matching path. An attacker can bypass host-based
    routing and any access controls attached to that route by changing the casing of the `Host` header.
    Version 2.11.1 contains a fix for the issue. (CVE-2026-27588)

Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - Caddy 是預設使用 TLS 的可擴充伺服器平台。從 2.10.0 版到 2.11.2之前的 版forward_auth copy_headers 未去除用戶端提供的標頭進而允許身分插入和權限提升。此問題已在 2.11.2 版中修正。(CVE-2026-30851)

請注意，Nessus 的判定取決於廠商所報告的套件是否存在。

Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - Caddy 是默认使用 TLS 的可扩展服务器平台。从版本 2.10.0 到低于 2.11.2的版本forward_auth copy_headers 未剥离客户端提供的标头从而允许身份注入和权限升级。已在版本 2.11.2 中修补此问题。(CVE-2026-30851)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

リモートの Fedora 43 ホストには、FEDORA-2026-3dc324bd9a のアドバイザリに記載された複数の脆弱性の影響を受けるパッケージがインストールされています。

    caddy 本体およびベンダーライブラリにわたる 22 件の CVE を解決するセキュリティアップデート。

Tenable は、前述の記述ブロックを Fedora セキュリティアドバイザリから直接抽出しています。

Nessus はこれらの問題をテストしておらず、代わりにアプリケーションが自己報告するバージョン番号にのみ依存していることに注意してください。

Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  - Caddy は、デフォルトで TLS を使用する拡張可能なサーバープラットフォームです。バージョン 2.10.0 からバージョン 2.11.2より前の まで、forward_auth copy_headers がクライアント指定のヘッダーをストリップしないために、ID インジェクションおよび権限昇格が可能になります。この問題には、バージョン 2.11.2 でパッチが適用されています。(CVE-2026-30851)

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

リモートの Fedora 44 ホストには、FEDORA-2026-950cac64f2 のアドバイザリに記載された複数の脆弱性の影響を受けるパッケージがインストールされています。

    caddy 本体およびベンダーライブラリにわたる 17 件の CVE を解決するセキュリティアップデート。

Tenable は、前述の記述ブロックを Fedora セキュリティアドバイザリから直接抽出しています。

Nessus はこれらの問題をテストしておらず、代わりにアプリケーションが自己報告するバージョン番号にのみ依存していることに注意してください。

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-950cac64f2 advisory.

    Security update resolving 17 CVEs across both caddy itself and its vendored libraries.

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 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-3dc324bd9a advisory.

    Security update resolving 22 CVEs across both caddy itself and its vendored libraries.

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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Caddy is an extensible server platform that uses TLS by default. From version 2.10.0 to before version     2.11.2, forward_auth copy_headers does not strip client-supplied headers, allowing identity injection and     privilege escalation. This issue has been patched in version 2.11.2. (CVE-2026-30851)

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

ID	Name	Product	Family	Published	Updated	Severity
438518	SCA: security update for github.com/caddyserver/caddy/v2/modules/caddyhttp/reverseproxy (GHSA-7r4p-vjf4-gxv4)	Tenable Self-Hosted Container Security	SCA Checks	3/9/2026	7/2/2026	high
439411	Alpine: caddy: security update to 2.11.2-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	3/28/2026	10/27/2026	critical
438518	SCA: security update for github.com/caddyserver/caddy/v2/modules/caddyhttp/reverseproxy (GHSA-7r4p-vjf4-gxv4)	Tenable Cloud Security	SCA Checks	3/9/2026	7/2/2026	high
439411	Alpine: caddy: security update to 2.11.2-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	3/28/2026	10/27/2026	critical
301667	Linux Distros 未修補的弱點：CVE-2026-30851	Nessus	Misc.	3/10/2026	8/1/2026	high
301667	Linux Distros 未修补的漏洞：CVE-2026-30851	Nessus	Misc.	3/10/2026	8/1/2026	high
324614	Fedora 43 : caddy (2026-3dc324bd9a)	Nessus	Fedora Local Security Checks	7/1/2026	7/1/2026	critical
301667	Linux Distros のパッチ未適用の脆弱性: CVE-2026-30851	Nessus	Misc.	3/10/2026	8/1/2026	high
324621	Fedora 44 : caddy (2026-950cac64f2)	Nessus	Fedora Local Security Checks	7/1/2026	7/1/2026	critical
324621	Fedora 44 : caddy (2026-950cac64f2)	Nessus	Fedora Local Security Checks	7/1/2026	7/1/2026	critical
324614	Fedora 43 : caddy (2026-3dc324bd9a)	Nessus	Fedora Local Security Checks	7/1/2026	7/1/2026	critical
301667	Linux Distros Unpatched Vulnerability : CVE-2026-30851	Nessus	Misc.	3/10/2026	8/1/2026	high

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