CVE-2025-27220

CVE-2025-27220 affects the CGI gem in Ruby, with a Regular Expression DoS in CGI::Util#escapeElement present in versions prior to 0.4.2. Documents indicate a DoS risk due to unbounded processing of input during cookie handling; no exploit details or affected environments are provided beyond this....

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...

CVE-2025-27220

In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service ReDoS vulnerability exists in the UtilescapeElement method...

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...

CVE-2025-27220

In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service ReDoS vulnerability exists in the UtilescapeElement method...

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...

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...

CVE-2025-27220

In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service ReDoS vulnerability exists in the UtilescapeElement method...

PT-2025-8695

Name of the Vulnerable Software and Affected Versions CGI gem versions prior to 0.4.2 Description A Regular Expression Denial of Service ReDoS vulnerability exists in the UtilescapeElement method. This issue can lead to high CPU consumption due to crafted input. The vulnerability affects Ruby...

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

There is a possibility for DoS by in the cgi gem. This vulnerability has been assigned the CVE identifier CVE-2025-27219. We recommend upgrading the cgi gem. Details CGI::Cookie.parse took super-linear time to parse a cookie string in some cases. Feeding a maliciously crafted cookie string into t...

CVE-2025-27220 - ReDoS in CGI::Util#escapeElement.

There is a possibility for Regular expression Denial of Service ReDoS by in the cgi gem. This vulnerability has been assigned the CVE identifier CVE-2025-27220. We recommend upgrading the cgi gem. Details The regular expression used in CGI::UtilescapeElement is vulnerable to ReDoS. The crafted...

BIT-RUBY-MIN-2021-33621

The cgi gem before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5 for Ruby allows HTTP response splitting. This is relevant to applications that use untrusted user input either to generate an HTTP response or to create a CGI::Cookie object...

BIT-RUBY-MIN-2021-41819

CGI::Cookie.parse in Ruby through 2.6.8 mishandles security prefixes in cookie names. This also affects the CGI gem through 0.3.0 for Ruby...

ROS-20240918-01

A vulnerability in the CGI::Cookie.parse function of the Ruby programming language is related to incorrect processing of security prefixes in cookie names. security prefixes in cookie names. Exploitation of the vulnerability allows an attacker, acting remotely, to affect data integrity...

Rocky Linux 9 : ruby:3.1 (RLSA-2024:1576)

The remote Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2024:1576 advisory. - The cgi gem before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5 for Ruby allows HTTP response splitting. This is relevant to applications that...

AlmaLinux 9 : ruby:3.1 (ALSA-2024:1576)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2024:1576 advisory. ruby/cgi-gem: HTTP response splitting in CGI CVE-2021-33621 ruby: ReDoS vulnerability in URI CVE-2023-28755 ruby: ReDoS vulnerability - upstream's...

Oracle Linux 9 : ruby:3.1 (ELSA-2024-1576)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-1576 advisory. ruby 3.1.4-143 - Upgrade to Ruby 3.1.4. Resolves: RHEL-5586 - Fix HTTP response splitting in CGI. Resolves: RHEL-5591 - Fix ReDos vulnerability in URI...

RHEL 9 : ruby:3.1 (RHSA-2024:1576)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1576 advisory. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system...

AlmaLinux 8 : ruby:3.1 (ALSA-2024:1431)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2024:1431 advisory. ruby/cgi-gem: HTTP response splitting in CGI CVE-2021-33621 ruby: ReDoS vulnerability in URI CVE-2023-28755 ruby: ReDoS vulnerability - upstream's...

Important: ruby

Issue Overview: The cgi gem before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5 for Ruby allows HTTP response splitting. This is relevant to applications that use untrusted user input either to generate an HTTP response or to create a CGI::Cookie object. CVE-2021-33621 Affected Packages:...