The remote Debian 11 host has a package installed that is affected by a vulnerability as referenced in the dla-4263 advisory.

    - -----------------------------------------------------------------------     Debian LTS Advisory DLA-4263-1              debian-lts@lists.debian.org     https://www.debian.org/lts/security/                      Utkarsh Gupta     August 04, 2025                             https://wiki.debian.org/LTS
    - -----------------------------------------------------------------------

    Package        : ruby-graphql     Version        : 1.11.12-0+deb11u1     CVE ID         : CVE-2025-27407     Debian Bug     : 1100442

    ruby-graphql is GraphQL language and runtime for Ruby. It was     discovered that loading a malicious schema definition in     `GraphQL::Schema.from_introspection` (or     `GraphQL::Schema::Loader.load`) can result in remote code execution.
    Any system which loads a schema by JSON from an untrusted source is     vulnerable, including those that use GraphQL::Client to load external     schemas via GraphQL introspection.

    For Debian 11 bullseye, this problem has been fixed in version     1.11.12-0+deb11u1.

    We recommend that you upgrade your ruby-graphql packages.

    For the detailed security status of ruby-graphql please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/ruby-graphql

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

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

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

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Debian dla-4263 : ruby-graphql - security update

critical Nessus Plugin ID 243314

Version 1.1