Important: Red Hat Security Advisory: ruby security update

An update for ruby is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the...

Important: Red Hat Security Advisory: ruby security update

An update for ruby is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the...

erb: ERB: Arbitrary code execution via deserialization bypass

A flaw was found in ERB, a templating system for Ruby. An attacker who can trigger deserialization of untrusted data in a Ruby application can bypass existing protections. This vulnerability allows for arbitrary code execution by exploiting specific public methods that evaluate template source...

avalon-filter-rce

Title: Prototype Escape and Remote Code Execution in RubyLouv...

ALSA-2026:18030 Important: ruby:3.3 security update

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks. Security Fixes: erb: ERB: Arbitrary code execution via deserialization bypass CVE-2026-41316 For more details about the security issues, including...

ruby-jwt: Empty-key HMAC bypass; cross-language sibling of CVE-2026-44351

JWT.decodetoken, '', true, algorithm: 'HS256' accepts an attacker-forged token. OpenSSL::HMAC.digest'SHA256', '', payload returns a valid digest under an empty key, and no raise InvalidKeyError if key.empty? precondition exists in the HMAC algorithm. JWT.decodetoken, "", true, algorithm: 'HS256' ...

Important: ruby security update

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks. Security Fixes: erb: ERB: Arbitrary code execution via deserialization bypass CVE-2026-41316 For more details about the security issues, including...

Important: ruby:3.3 security update

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks. Security Fixes: erb: ERB: Arbitrary code execution via deserialization bypass CVE-2026-41316 For more details about the security issues, including...

ALSA-2026:18039 Important: ruby security update

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks. Security Fixes: erb: ERB: Arbitrary code execution via deserialization bypass CVE-2026-41316 For more details about the security issues, including...

ALSA-2026:18065 Important: ruby security update

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks. Security Fixes: erb: ERB: Arbitrary code execution via deserialization bypass CVE-2026-41316 For more details about the security issues, including...

ruby security update

3.3.10-12 - Fix arbitrary code execution via deserialization bypass in ERB. CVE-2026-41316 Resolves: RHEL-171244...

Oracle Linux 10 : ruby (ELSA-2026-18065)

The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-18065 advisory. 3.3.10-12 - Fix arbitrary code execution via deserialization bypass in ERB. CVE-2026-41316 Resolves: RHEL-171244 Tenable has extracted the preceding descripti...

RHEL 10 : ruby (RHSA-2026:18065)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:18065 advisory. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management...

RHEL 9 : ruby (RHSA-2026:18039)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:18039 advisory. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management task...

RHEL 9 : ruby:3.3 (RHSA-2026:18030)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:18030 advisory. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management task...

RockyLinux 9 : ruby:3.3 (RLSA-2026:18030)

The remote RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:18030 advisory. erb: ERB: Arbitrary code execution via deserialization bypass CVE-2026-41316 Tenable has extracted the preceding description block directly from the RockyLinux...

Amazon Linux 2023 : ruby3.4, ruby3.4-bundled-gems, ruby3.4-default-gems (ALAS2023-2026-1690)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1690 advisory. ERB is a templating system for Ruby. Ruby 2.7.0 before ERB 2.2.0 was published on rubygems.org introduced an @init instance variable guard in ERBresult and ERBrun to prevent code execution when an ERB...

CVE-2026-42245

A flaw was found in Net::IMAP, a Ruby library implementing the Internet Message Access Protocol IMAP client functionality. A hostile server can exploit a quadratic time complexity issue in the Net::IMAP::ResponseReader when processing large responses containing numerous string literals. This can...

OESA-2026-2285 rubygem-yard security update

YARD is a documentation generation tool for the Ruby programming language. It enables the user to generate consistent, usable documentation that can be exported to a number of formats very easily, and also supports extending for custom Ruby constructs such as custom class level definitions...

Important: ruby3.4

Issue Overview: ERB is a templating system for Ruby. Ruby 2.7.0 before ERB 2.2.0 was published on rubygems.org introduced an @init instance variable guard in ERBresult and ERBrun to prevent code execution when an ERB object is reconstructed via Marshal.load deserialization. However, three other...