The version of ruby installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-27221 advisory.

  - In the URI gem before 1.0.3 for Ruby, the URI handling methods (URI.join, URI#merge, URI#+) have an     inadvertent leakage of authentication credentials because userinfo is retained even after changing the     host. (CVE-2025-27221)

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

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:4488 advisory.

    * rexml: DoS vulnerability in REXML (CVE-2024-39908)

    * rexml: rubygem-rexml: DoS when parsing an XML having many specific characters such as whitespace     character, >] and ]> (CVE-2024-41123)

    * rexml: DoS vulnerability in REXML (CVE-2024-41946)

    * rexml: DoS vulnerability in REXML (CVE-2024-43398)

    * CGI: ReDoS in CGI::Util#escapeElement (CVE-2025-27220)

    * CGI: Denial of Service in CGI::Cookie.parse (CVE-2025-27219)

    * uri: userinfo leakage in URI#join, URI#merge and URI#+ (CVE-2025-27221)

Tenable has extracted the preceding description block directly from the RockyLinux 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 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4163 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4163-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                      Lucas Kanashiro     May 12, 2025                                  https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : rubygems     Version        : 3.2.5-2+deb11u1     CVE ID         : CVE-2021-43809 CVE-2023-28755 CVE-2025-27221

    Multiple vulnerabilities were found in rubygems, which contains a package     management framework for Ruby and a dependency manager for Ruby applications.

    CVE-2021-43809

        In bundler versions before 2.2.33, when working with untrusted and         apparently harmless `Gemfile`'s, it is not expected that they lead to         execution of external code, unless that's explicit in the ruby code inside         the `Gemfile` itself. However, if the `Gemfile` includes `gem` entries that         use the `git` option with invalid, but seemingly harmless, values with a         leading dash, this can be false. To handle dependencies that come from a         Git repository instead of a registry, Bundler uses various commands, such         as `git clone`.  These commands are being constructed using user input         (e.g.  the repository URL). When building the commands, Bundler versions         before 2.2.33 correctly avoid Command Injection vulnerabilities by passing         an array of arguments instead of a command string.  However, there is the         possibility that a user input starts with a dash (`-`) and is therefore         treated as an optional argument instead of a positional one.  This can lead         to Code Execution because some of the commands have options that can be         leveraged to run arbitrary executables.

    CVE-2023-28755

        A ReDoS issue was discovered in the URI component through 0.12.0 in Ruby         through 3.2.1. The URI parser mishandles invalid URLs that have specific         characters. It causes an increase in execution time for parsing strings to         URI objects.

    CVE-2025-27221

        The URI handling methods (URI.join, URI#merge, URI#+) have an inadvertent         leakage of authentication credentials because userinfo is retained even         after changing the host.

    For Debian 11 bullseye, these problems have been fixed in version     3.2.5-2+deb11u1.

    We recommend that you upgrade your rubygems packages.

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

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

According to the versions of the ruby packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    In the CGI gem before 0.4.2 for Ruby, the CGI::Cookie.parse method in the CGI library contains a potential     Denial of Service (DoS) vulnerability. The method does not impose any limit on the length of the raw     cookie value it processes. This oversight can lead to excessive resource consumption when parsing     extremely large cookies.(CVE-2025-27219)

    In the URI gem before 1.0.3 for Ruby, the URI handling methods (URI.join, URI#merge, URI#+) have an     inadvertent leakage of authentication credentials because userinfo is retained even after changing the     host.(CVE-2025-27221)

    In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists     in the Util#escapeElement method.(CVE-2025-27220)

Tenable has extracted the preceding description block directly from the EulerOS ruby 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 AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1769511237 advisory.

  - In the URI gem before 1.0.3 for Ruby, the URI handling methods (URI.join, URI#merge, URI#+) have an     inadvertent leakage of authentication credentials because userinfo is retained even after changing the     host. (CVE-2025-27221)

  - URI is a module providing classes to handle Uniform Resource Identifiers. In versions 0.12.4 and earlier     (bundled in Ruby 3.2 series) 0.13.2 and earlier (bundled in Ruby 3.3 series), 1.0.3 and earlier (bundled     in Ruby 3.4 series), when using the + operator to combine URIs, sensitive information like passwords from     the original URI can be leaked, violating RFC3986 and making applications vulnerable to credential     exposure. This is a a bypass for the fix to CVE-2025-27221 that can expose user credentials. This issue     has been fixed in versions 0.12.5, 0.13.3 and 1.0.4. (CVE-2025-61594)

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 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2025_4488 advisory.

    * rexml: DoS vulnerability in REXML (CVE-2024-39908)

    * rexml: rubygem-rexml: DoS when parsing an XML having many specific characters such as whitespace     character, >] and ]> (CVE-2024-41123)

    * rexml: DoS vulnerability in REXML (CVE-2024-41946)

    * rexml: DoS vulnerability in REXML (CVE-2024-43398)

    * CGI: ReDoS in CGI::Util#escapeElement (CVE-2025-27220)

    * CGI: Denial of Service in CGI::Cookie.parse (CVE-2025-27219)

    * uri: userinfo leakage in URI#join, URI#merge and URI#+ (CVE-2025-27221)

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 SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:4264-1 advisory.

    - CVE-2024-35221: Fixed remote DoS via YAML manifest (bsc#1225905)
    - CVE-2024-47220: Fixed HTTP request smuggling in WEBrick (bsc#1230930)
    - CVE-2024-49761: Fixed ReDOS vulnerability by updating REXML to 3.3.9 (bsc#1232440)
    - CVE-2025-24294: Fixed denial of service (DoS) caused by an insufficient check on the length       of a decompressed domain name within a DNS packet in resolv gem (bsc#1246430)
    - CVE-2025-27219: Fixed denial of service in CGI::Cookie.parse (bsc#1237804)
    - CVE-2025-27220: Fixed ReDoS in CGI::Util#escapeElement (bsc#1237806)
    - CVE-2025-27221: Fixed userinfo leakage in URI#join, URI#merge and URI#+ (bsc#1237805)
    - CVE-2025-6442: Fixed ruby WEBrick read_header HTTP request smuggling vulnerability (bsc#1245254)

Tenable has extracted the preceding description block directly from the SUSE 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 Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-10217 advisory.

    - Fix Net::IMAP vulnerable to possible DoS by memory exhaustion. (CVE-2025-25186)
    - Fix Denial of Service in CGI::Cookie.parse. (CVE-2025-27219)
    - Fix userinfo leakage in URI#join, URI#merge and URI#+. (CVE-2025-27221)

    rubygem-abrt

Tenable has extracted the preceding description block directly from the Oracle 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 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-2025:0560 advisory.

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

    CVE-2025-25186:
    Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Starting in     version 0.3.2 and prior to versions 0.3.8, 0.4.19, and 0.5.6, there is a possibility for denial of service     by memory exhaustion in net-imap's response parser.  At any time while the client is connected, a     malicious server can send  can send highly compressed uid-set data which is automatically read by the     client's receiver thread. The response parser uses Range#to_a to convert the uid-set data into arrays of     integers, with no limitation on the expanded size of the ranges. Versions 0.3.8, 0.4.19, 0.5.6, and higher     fix this issue. Additional details for proper configuration of fixed versions and backward compatibility     are available in the GitHub Security Advisory.

    CVE-2025-27219:
    In the CGI gem before 0.4.2 for Ruby, the CGI::Cookie.parse method in the CGI library contains a potential     Denial of Service (DoS) vulnerability. The method does not impose any limit on the length of the raw     cookie value it processes. This oversight can lead to excessive resource consumption when parsing     extremely large cookies.

    CVE-2025-27221:
    In the URI gem before 1.0.3 for Ruby, the URI handling methods (URI.join, URI#merge, URI#+) have an     inadvertent leakage of authentication credentials because userinfo is retained even after changing the     host.

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.

ID	Name	Product	Family	Published	Updated	Severity
233079	CBL Mariner 2.0 Security Update: ruby (CVE-2025-27221)	Nessus	MarinerOS Local Security Checks	3/20/2025	4/20/2025	low
243116	RockyLinux 9 : ruby:3.1 (RLSA-2025:4488)	Nessus	Rocky Linux Local Security Checks	7/30/2025	7/30/2025	high
236773	Debian dla-4163 : bundler - security update	Nessus	Debian Local Security Checks	5/15/2025	5/15/2025	low
238215	EulerOS 2.0 SP12 : ruby (EulerOS-SA-2025-1603)	Nessus	Huawei Local Security Checks	6/11/2025	6/11/2025	medium
360181	AlmaLinux 9.2 [TuxCare] Security Update: ruby / ruby-default-gems / ruby-devel / ruby-doc / ruby-libs / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1769511237)	Nessus	Alma Linux Local Security Checks	10/1/2026	10/1/2026	low
356410	Rocky Linux 9 [CIQ] Security Update: ruby / ruby-bundled-gems / ruby-bundled-gems-debuginfo / etc Multiple Vulnerabilities (crlsa-2025_4488)	Nessus	Rocky Linux Local Security Checks	10/1/2026	10/1/2026	high
277246	SUSE SLED15: libruby2_5-2_5 / ruby2.5 / ruby2.5-devel / ruby2.5-devel-extra / etc (SUSE-SU-2025:4264-1)	Nessus	SuSE Local Security Checks	12/3/2025	6/26/2026	high
241373	Oracle Linux 8 : ruby:3.3 (ELSA-2025-10217)	Nessus	Oracle Linux Local Security Checks	7/4/2025	9/11/2025	medium
276200	TencentOS Server 3: ruby:3.3 (TSSA-2025:0560)	Nessus	Tencent Local Security Checks	11/20/2025	12/4/2025	medium

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