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

  - websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the
    WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to
    be encoded as bytes with the high bit set, and a server or client can send an indefinite sequence of 0x80
    or higher bytes that the peer parses into an ever-growing Ruby integer. This can make a WebSocket
    connection consume an unbounded amount of memory and lead to the host process running out of memory. This
    issue is fixed in version 0.8.1. (CVE-2026-54463)

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

  - websocket-driver 是一個具有可插拔 I/O 的 WebSocket 協定處理常式。在 0.8.1之前，websocket-driver 中 WebSocket 協定的草稿版本包括一個長度標頭，允許將任意大的整數編碼為設定了高位元組的位元組，並且伺服器或用戶端可以發送無限的 0x80 位元組序列，對等體將其解析為不斷增長的 Ruby 整數。這可能會使 WebSocket 連線消耗無限量的記憶體，並導致主機進程記憶體不足。0.8.1 版已修正此問題。(CVE-2026-54463)

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。

  - websocket-driver 是具有可插拔 I/O 的 WebSocket 协议处理程序。在此 0.8.1之前，websocket-driver 中 WebSocket 协议的草稿版本包含一个长度标头，可允许将任意大整数编码为设置高位的字节，并且服务器或客户端可发送无限的 0x80 或更高字节序列，对等机将其解析为不断增长的 Ruby 整数。这可使得 WebSocket 连接消耗无限量的内存，并导致主机进程内存不足。此问题已在 0.8.1 版本中修复。(CVE-2026-54463)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

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。

  - websocket-driver は、プラグ可能な I/O を備えた WebSocket プロトコルハンドラーです。 0.8.1 より前のバージョンでは、websocket-driver の WebSocket プロトコルのドラフトバージョンには、任意の大きな整数を、高ビットセットを含むバイトとしてエンコードできる長さヘッダーが含まれており、サーバーまたはクライアントは、ピアが解析して成長し続ける Ruby 整数に無限に連続した 0x80 以上のバイトを送信することができます。これにより、WebSocket接続が無制限のメモリを消費し、ホストプロセスがメモリ不足になる可能性があります。この問題はバージョン 0.8.1 で修正されています。(CVE-2026-54463)

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。

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-104954 advisory.

    websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the     WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to     be encoded as bytes with the high bit set, and a server or client can send an indefinite sequence of 0x80     or higher bytes that the peer parses into an ever-growing Ruby integer. This can make a WebSocket     connection consume an unbounded amount of memory and lead to the host process running out of memory. This     issue is fixed in version 0.8.1.

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

  - websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the     WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to     be encoded as bytes with the high bit set, and a server or client can send an indefinite sequence of 0x80     or higher bytes that the peer parses into an ever-growing Ruby integer. This can make a WebSocket     connection consume an unbounded amount of memory and lead to the host process running out of memory. This     issue is fixed in version 0.8.1. (CVE-2026-54463)

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

ID	Name	Product	Family	Published	Updated	Severity
446031	SCA: security update for websocket-driver (GHSA-ghhp-3qvg-889p)	Tenable Cloud Security	SCA Checks	8/17/2026	8/17/2026	medium
446031	SCA: security update for websocket-driver (GHSA-ghhp-3qvg-889p)	Tenable Self-Hosted Container Security	SCA Checks	8/17/2026	8/17/2026	medium
327777	Linux Distros 未修補弱點：CVE-2026-54463	Nessus	Misc.	7/18/2026	9/2/2026	medium
327777	Linux Distros 未修补的漏洞：CVE-2026-54463	Nessus	Misc.	7/18/2026	9/2/2026	medium
327777	Linux Distros のパッチ未適用の脆弱性: CVE-2026-54463	Nessus	Misc.	7/18/2026	9/2/2026	medium
341379	Unity Linux 20.1070e Security Update: rubygem-websocket-driver (UTSA-2026-104954)	Nessus	Unity Linux Local Security Checks	8/29/2026	8/29/2026	medium
327777	Linux Distros Unpatched Vulnerability : CVE-2026-54463	Nessus	Misc.	7/18/2026	9/2/2026	medium

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