CVE-2026-54500

Oj Optimized JSON is a JSON parser and Object marshaller packaged as a Ruby gem. In versions prior to 3.17.3, Oj.load in :object mode reads uninitialized stack memory and, for long keys, reads out of bounds when parsing a JSON object whose key is 254 bytes or longer. The interned bytes can surfac...

GHSA-2CW7-V8FF-P88R Oj: Use-After-Free in Oj::Parser Symbol Key Cache Toggle

Summary Disabling symbolkeys on a reused Oj::Parser instance triggers a heap use-after-free. When symbolkeys is toggled from true to false, optsymbolkeysset frees the internal key cache cachefree but does not clear the pointer. The next parse call reads from the freed cache via cacheintern,...

Exploit for CVE-2022-25765

CVE-2022-25765 — Command Injection in pdfkit Descripción...

ruby:3.3 security update

An update is available for module.rubygem-abrt, module.ruby, module.rubygem-mysql2, module.rubygem-pg, rubygem-mysql2, ruby, rubygem-abrt, rubygem-pg. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

Unity Linux 20.1070e Security Update: rubygem-nokogiri (UTSA-2026-016729)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016729 advisory. Nokogiri is an open source XML and HTML library for Ruby. Nokogiri = 1.13.4. There are no known workarounds for this issue. Tenable has extracted the preceding...

Unity Linux 20.1060e / 20.1070e Security Update: rubygem-nokogiri (UTSA-2026-016661)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016661 advisory. Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri before version 1.11.0.rc4 there is an XXE...

Astra Linux – Vulnerability in yajl

In the yajl-ruby gem version 1.3.0 for Ruby, when a properly crafted JSON file is provided to Yajl::Parser.new.parse, the entire Ruby process crashes with a SIGABRT in the yajlstringdecode function in yajlencode.c. This causes the entire Ruby process to terminate, potentially leading to a denial ...

Astra Linux – Vulnerability in Ruby 2.5

In Ruby, the CGI::Cookie.parse method used from version 2.6.8 mishandles security prefixes in cookie names. This issue also affects the CGI gem used from version 0.3.0 in Ruby...

Astra Linux – Vulnerability in Ruby-Nokogiri

Nokogiri is a Rubygem that provides HTML, XML, SAX, and Reader parsers, with support for XPath and CSS selectors. In Nokogiri versions prior to 1.11.0.rc4, there was an XXE vulnerability. XML schemas parsed by Nokogiri::XML::Schema are trusted by default, allowing external resources to be accesse...

Linux Distros Unpatched Vulnerability : CVE-2026-42256

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. From versions 0.4.0 to before 0.4.24, 0.5.0 to before 0.5.14, and 0.6.0...

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...

EUVD-2026-30330

cssparser is a Ruby CSS parser. Prior to 2.1.0 and 1.22.0, the CSS Parser gem does not validate HTTPS connections, allowing a Man-in-the-Middle MITM attacker to inject or modify CSS content when stylesheets are loaded via HTTPS. The connection is established with OpenSSL::SSL::VERIFYNONE, meaning...

Malicious Package

Overview knot-rspec-formatter-json is a malicious package. This package is part of a malicious cluster of Ruby gems published by the threat actor knot-theory. Designed to impersonate legitimate utilities, it executes a payload upon installation that harvests environment variables, SSH keys, AWS...

Malicious Package

Overview knot-rails-assets-pipeline is a malicious package. This package is part of a malicious cluster of Ruby gems published by the threat actor knot-theory. Designed to impersonate legitimate utilities, it executes a payload upon installation that harvests environment variables, SSH keys, AWS...

Malicious Package

Overview knot-activesupport-logger is a malicious package. This package is part of a malicious cluster of Ruby gems published by the threat actor knot-theory. Designed to impersonate legitimate utilities, it executes a payload upon installation that harvests environment variables, SSH keys, AWS...

Malicious Package

Overview knot-simple-formatter is a malicious package. This package is part of a malicious cluster of Ruby gems published by the threat actor knot-theory. Designed to impersonate legitimate utilities, it executes a payload upon installation that harvests environment variables, SSH keys, AWS...

Malicious Package

Overview knot-devise-jwt-helper is a malicious package. This package is part of a malicious cluster of Ruby gems published by the threat actor knot-theory. Designed to impersonate legitimate utilities, it executes a payload upon installation that harvests environment variables, SSH keys, AWS...

ROS-20260513-73-0001

Vulnerability in rubygem-rack related to errors in processing input length parameters. Exploitation of the vulnerability could allow a remote attacker to cause a denial of service...

Unity Linux 20.1060e / 20.1070e Security Update: rubygem-puma (UTSA-2026-017512)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017512 advisory. In Puma RubyGem before 4.3.4 and 3.12.5, an attacker could smuggle an HTTP response, by using an invalid transfer-encoding header. The problem has been fixed in Puma...

Security Bulletin: IBM Watson Discovery Cartridge affected by vulnerability in addressable-2.5.2.gem

Summary IBM Watson Discovery Cartridge affected by vulnerability in addressable-2.5.2.gem Vulnerability Details CVEID:CVE-2026-35611 DESCRIPTION: Addressable is an alternative implementation to the URI implementation that is part of Ruby's standard library. From 2.3.0 to before 2.9.0, within the...