pay-rails/pay: non-constant-time HMAC comparison in Paddle Billing webhook signature verifier

Summary Pay::Webhooks::PaddleBillingControllervalidsignature? app/controllers/pay/webhooks/paddlebillingcontroller.rb verifies the Paddle Billing webhook signature by computing OpenSSL::HMAC.hexdigest... and comparing it to the attacker-supplied header value using Ruby's String==. Ruby's == is...

net-imap: rubygem-net-imap: Net::IMAP: Denial of Service via malformed command input

A flaw was found in Net::IMAP, a Ruby client library for the Internet Message Access Protocol IMAP. This vulnerability allows a remote attacker to cause a denial of service by sending specially crafted input to certain Net::IMAP commands. When a raw string argument, derived from user-controlled...

Important: Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: ruby3.4: ruby3.4-3.4.8-31.3.hum1 aarch64, x8664 ruby3.4-bundled-gems-3.4.8-31.3.hum1 aarch64, x8664 ruby3.4-default-gems-3.4.8-31.3.hum1 noarch ruby3.4-devel-3.4.8-31.3.hum1 aarch64, x8664...

net-imap: Net::IMAP: Arbitrary IMAP command injection due to improper input validation

A flaw was found in Net::IMAP, a Ruby library that implements Internet Message Access Protocol IMAP client functionality. This vulnerability arises from improper input validation when handling ID field values and arguments to the enable command. A remote attacker could exploit this by injecting...

RHSA-2026:33630 Red Hat Security Advisory: ruby security update

Bulletin has no description...

RHSA-2026:33577 Red Hat Security Advisory: ruby:4.0 security update

Bulletin has no description...

RHSA-2026:33576 Red Hat Security Advisory: ruby:3.3 security update

Bulletin has no description...

RHSA-2026:33565 Red Hat Security Advisory: ruby security update

Bulletin has no description...

RHSA-2026:33540 Red Hat Security Advisory: ruby4.0 security update

Bulletin has no description...

RHSA-2026:33515 Red Hat Security Advisory: ruby:3.3 security update

Bulletin has no description...

RHSA-2026:33514 Red Hat Security Advisory: ruby:2.5 security update

Bulletin has no description...

RHSA-2026:33512 Red Hat Security Advisory: ruby security update

Bulletin has no description...

RHSA-2026:33478 Red Hat Security Advisory: ruby security update

Bulletin has no description...

RHSA-2026:33462 Red Hat Security Advisory: ruby security update

Bulletin has no description...

ruby/net-imap: ruby: Net::IMAP: IMAP Command Injection via Symbol Arguments

A flaw was found in Net::IMAP, a Ruby library that provides Internet Message Access Protocol IMAP client functionality. This vulnerability allows a remote attacker to inject arbitrary IMAP commands. This is achieved by passing specially crafted symbol arguments to IMAP commands. Successful...

Important: Red Hat Security Advisory: ruby:2.5 security update

An update for the ruby:2.5 module is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability...

ruby:4.0 security update

An update is available for module.ruby, module.rubygem-mysql2, module.rubygem-pg, rubygem-mysql2, ruby, rubygem-pg. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE li...

ruby:3.3 security update

An update is available for module.ruby, module.rubygem-mysql2, module.rubygem-pg, rubygem-mysql2, ruby, rubygem-pg. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE li...

CVE-2026-54906 affecting package rubygem-concurrent-ruby for versions less than 1.3.7-1

CVE-2026-54906 affecting package rubygem-concurrent-ruby for versions less than 1.3.7-1. An upgraded version of the package is available that resolves this issue...

CVE-2026-57234 affecting package rubygem-nokogiri for versions less than 1.19.4-1

CVE-2026-57234 affecting package rubygem-nokogiri for versions less than 1.19.4-1. An upgraded version of the package is available that resolves this issue...