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

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to
    26.10.0rc1, twisted.words.protocols.irc.IRC.dataReceived retains all bytes received without a line feed in
    its per-connection buffer and applies no maximum line length. The twisted.words.service.IRCUser server
    subclass inherits this behavior, and buffering occurs before PASS, NICK, or USER authentication commands.
    An unauthenticated connection can continuously grow the buffer until the shared server process runs out of
    memory and drops all users. This issue is fixed in version 26.10.0rc1. (CVE-2026-115776)

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。

  Twisted 是適用於網際網路應用程式的事件型框架，支持 Python 3.6+。在 26.10.0rc1 之前，twisted.words.protocols.irc.IRC.dataReceived 會在其每個連線緩衝區中保留所有沒有換行符的位元組，並且不套用最大行長度。twisted.words.service.IRCUser 伺服器子類別繼承此行為，緩衝會在 PASS、NICK 或 USER 驗證命令之前發生。
    未經驗證的連線可能會持續增加緩衝區，直到共用伺服器處理程序記憶體耗盡並丟棄所有使用者為止。此問題已在 26.10.0rc1 版中修正。（CVE-2026-115776）

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。

  Twisted 是基于事件的框架，适用于支持 Python 3.6+ 的 Internet 应用程序。在低于 26.10.0rc1 的版本中，twisted.words.protocols.irc.IRC.dataReceived 将接收到的所有字节（不带换行符）保留在其每个连接缓冲区中，并且不应用最大行长度。twisted.words.service.IRCUser 服务器子类继承了此行为，并且缓冲在 PASS、NICK 或 USER 认证命令之前发生。
    未经身份验证的连接可使缓冲区持续增长，直到共享服务器进程耗尽内存并终止所有用户为止。已修复版本 26.10.0rc1 中的此问题。（CVE-2026-115776）

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。

  - Twisted は、Python 3.6+ をサポートする、イベントベースのインターネットアプリケーション用フレームワークです。26.10.0rc1より前では、twisted.words.protocols.irc.IRC.dataReceivedは、接続ごとのバッファに改行なしで受信したすべてのバイトを保持し、最大行長を適用しません。twisted.words.service.IRCUser サーバーサブクラスはこの動作を継承し、バッファリングは PASS、NICK、または USER 認証コマンドの前に発生します。
    認証されていない接続は、共有サーバープロセスがメモリを使い果たし、すべてのユーザーを喪失するまで、バッファを増加させ続ける可能性があります。この問題はバージョン 26.10.0rc1 で修正されました。(CVE-2026-115776)

Nessus は、ベンダーから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。

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-3385 advisory.

    A flaw was found in Twisted. An unauthenticated remote attacker can cause a Denial of Service (DoS) by     exhausting server memory. The issue occurs because the XML stream parser retains unfinished elements in     memory without enforcing size or element count limits. By transmitting a continuous stream of child     elements within an unclosed container during pre-authentication communication, an attacker can crash the     server process. (CVE-2026-115775)

    A flaw was found in Twisted. The Internet Relay Chat (IRC) protocol implementation does not enforce a     maximum line length when buffering incoming connection data. An unauthenticated remote attacker can     exploit this by sending a continuous stream of data without line feed characters to an IRC service. This     causes the server process to consume excessive memory until it runs out of resources, resulting in a     Denial of Service (DoS) that terminates connections for all users. (CVE-2026-115776)

    A flaw was found in Twisted. The Telnet service implementation fails to enforce a size limit on incoming     data buffers during protocol option negotiation, which occurs before user authentication. An     unauthenticated remote attacker can exploit this vulnerability by sending a continuous stream of     subnegotiation data without a terminating delimiter. This causes unbounded memory consumption that can     crash the application, resulting in a Denial of Service (DoS). (CVE-2026-115778)

Tenable has extracted the preceding description block directly from the tested product 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.

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to     26.10.0rc1, twisted.words.protocols.irc.IRC.dataReceived retains all bytes received without a line feed in     its per-connection buffer and applies no maximum line length. The twisted.words.service.IRCUser server     subclass inherits this behavior, and buffering occurs before PASS, NICK, or USER authentication commands.
    An unauthenticated connection can continuously grow the buffer until the shared server process runs out of     memory and drops all users. This issue is fixed in version 26.10.0rc1. (CVE-2026-115776)

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

The version of python-twisted-words installed on the remote host is prior to 12.2.0-4. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-4074 advisory.

    A flaw was found in Twisted. An unauthenticated remote attacker can cause a Denial of Service (DoS) by     exhausting server memory. The issue occurs because the XML stream parser retains unfinished elements in     memory without enforcing size or element count limits. By transmitting a continuous stream of child     elements within an unclosed container during pre-authentication communication, an attacker can crash the     server process. (CVE-2026-115775)

    A flaw was found in Twisted. The Internet Relay Chat (IRC) protocol implementation does not enforce a     maximum line length when buffering incoming connection data. An unauthenticated remote attacker can     exploit this by sending a continuous stream of data without line feed characters to an IRC service. This     causes the server process to consume excessive memory until it runs out of resources, resulting in a     Denial of Service (DoS) that terminates connections for all users. (CVE-2026-115776)

Tenable has extracted the preceding description block directly from the tested product 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	Name	Product	Family	Published	Updated	Severity
478040	Chainguard: synapse: security update to 1.164.1-r2	Tenable Cloud Security	Chainguard Local Security Checks	10/31/2026	10/31/2026	high
477261	SCA: security update for Twisted (GHSA-53xc-49m8-p798)	Tenable Self-Hosted Container Security	SCA Checks	10/24/2026	10/24/2026	high
477261	SCA: security update for Twisted (GHSA-53xc-49m8-p798)	Tenable Cloud Security	SCA Checks	10/24/2026	10/24/2026	high
478040	Chainguard: synapse: security update to 1.164.1-r2	Tenable Self-Hosted Container Security	Chainguard Local Security Checks	10/31/2026	10/31/2026	high
371717	Linux Distros 未修補弱點：CVE-2026-115776	Nessus	Misc.	10/24/2026	11/4/2026	high
371717	Linux Distros 未修补的漏洞：CVE-2026-115776	Nessus	Misc.	10/24/2026	11/4/2026	high
371717	Linux Distros のパッチ未適用の脆弱性: CVE-2026-115776	Nessus	Misc.	10/24/2026	11/4/2026	high
377965	Amazon Linux 2023 : python3-twisted, python3-twisted+tls (ALAS2023-2026-3385)	Nessus	Amazon Linux Local Security Checks	11/9/2026	11/9/2026	high
371717	Linux Distros Unpatched Vulnerability : CVE-2026-115776	Nessus	Misc.	10/24/2026	11/4/2026	high
377949	Amazon Linux 2 : python-twisted-words (ALAS-2026-4074)	Nessus	Amazon Linux Local Security Checks	11/9/2026	11/9/2026	high

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