CVE-2026-44312: Inclusion of Functionality from Untrusted Control Sphere

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...

CLSA-2026-1778661102 ruby: Fix of CVE-2023-28756

CVE-2023-28756: fix ReDoS in Time.rfc2822 by linearizing the RFC2822 parser regex in lib/time.rb to prevent quadratic backtracking on crafted invalid input...

GemStuffer Abuses 150+ RubyGems to Exfiltrate Scraped U.K. Council Portal Data

Cybersecurity researchers are calling attention to a new campaign dubbed GemStuffer that has targeted the RubyGems repository with more than 150 gems that use the registry as a data exfiltration channel rather than for malware distribution. "The packages do not appear designed for mass developer...

MAL-2026-3635 Malicious code in knot-rspec-formatter-json (RubyGems)

--- -= Per source details. Do not edit below this line.=- Source: google-open-source-security a4e4f74e90479d472a307d311d48214827e21cf93ecf9b0b62ff2cb72adb2c9e This package is a malicious packages part of the Go BufferZoneCorp and RubyGems knot-theory clusters. The packages in this cluster steal...

Malicious code in knot-simple-formatter (RubyGems)

--- -= Per source details. Do not edit below this line.=- Source: google-open-source-security a4e4f74e90479d472a307d311d48214827e21cf93ecf9b0b62ff2cb72adb2c9e This package is a malicious packages part of the Go BufferZoneCorp and RubyGems knot-theory clusters. The packages in this cluster steal...

Malicious code in knot-rails-assets-pipeline (RubyGems)

--- -= Per source details. Do not edit below this line.=- Source: google-open-source-security a4e4f74e90479d472a307d311d48214827e21cf93ecf9b0b62ff2cb72adb2c9e This package is a malicious packages part of the Go BufferZoneCorp and RubyGems knot-theory clusters. The packages in this cluster steal...

MAL-2026-3631 Malicious code in knot-date-utils-rb (RubyGems)

--- -= Per source details. Do not edit below this line.=- Source: google-open-source-security a4e4f74e90479d472a307d311d48214827e21cf93ecf9b0b62ff2cb72adb2c9e This package is a malicious packages part of the Go BufferZoneCorp and RubyGems knot-theory clusters. The packages in this cluster steal...

MAL-2026-3636 Malicious code in knot-simple-formatter (RubyGems)

--- -= Per source details. Do not edit below this line.=- Source: google-open-source-security a4e4f74e90479d472a307d311d48214827e21cf93ecf9b0b62ff2cb72adb2c9e This package is a malicious packages part of the Go BufferZoneCorp and RubyGems knot-theory clusters. The packages in this cluster steal...

MAL-2026-3634 Malicious code in knot-rails-assets-pipeline (RubyGems)

--- -= Per source details. Do not edit below this line.=- Source: google-open-source-security a4e4f74e90479d472a307d311d48214827e21cf93ecf9b0b62ff2cb72adb2c9e This package is a malicious packages part of the Go BufferZoneCorp and RubyGems knot-theory clusters. The packages in this cluster steal...

MAL-2026-3630 Malicious code in knot-activesupport-logger (RubyGems)

--- -= Per source details. Do not edit below this line.=- Source: google-open-source-security a4e4f74e90479d472a307d311d48214827e21cf93ecf9b0b62ff2cb72adb2c9e This package is a malicious packages part of the Go BufferZoneCorp and RubyGems knot-theory clusters. The packages in this cluster steal...

Malicious code in knot-date-utils-rb (RubyGems)

--- -= Per source details. Do not edit below this line.=- Source: google-open-source-security a4e4f74e90479d472a307d311d48214827e21cf93ecf9b0b62ff2cb72adb2c9e This package is a malicious packages part of the Go BufferZoneCorp and RubyGems knot-theory clusters. The packages in this cluster steal...

MAL-2026-3633 Malicious code in knot-rack-session-store (RubyGems)

--- -= Per source details. Do not edit below this line.=- Source: google-open-source-security a4e4f74e90479d472a307d311d48214827e21cf93ecf9b0b62ff2cb72adb2c9e This package is a malicious packages part of the Go BufferZoneCorp and RubyGems knot-theory clusters. The packages in this cluster steal...

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...

Ruby URI Module Confidential Data Access

The vulnerability of the Ruby language’s URI module, as well as the RubyGems package manager system, relates to the exposure of information. Exploiting this vulnerability can allow an attacker to gain access to confidential data remotely...

CVE-2026-42205

Avo is a framework to create admin panels for Ruby on Rails apps. Prior to version 3.31.2, a broken access control vulnerability was identified in the ActionsController of the Avo framework. Due to insecure action lookup logic, an authenticated user can execute any Action class descendants of...

ROS-20260512-73-0033

Vulnerability in ruby related to lack of protection of proprietary data. Exploitation of the vulnerability may allow a remote attacker to gain unauthorized access to protected information...

Linux Distros Unpatched Vulnerability : CVE-2026-42257

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. Prior to versions 0.4.24, 0.5.14, and 0.6.4, several Net::IMAP commands...

SUSE CVE-2026-41493

YARD is a Ruby Documentation tool. Prior to version 0.9.42, a path traversal vulnerability was discovered in YARD when using yard server to serve documentation. This bug would allow unsanitized HTTP requests to access arbitrary files on the machine of a yard server host under certain conditions...

Unity Linux 20.1060e / 20.1070e Security Update: ruby (UTSA-2026-017525)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017525 advisory. An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unkno...

Unity Linux 20.1060e / 20.1070e Security Update: ruby (UTSA-2026-017532)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017532 advisory. An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP server can use the PASV response to trick Net::FTP into...