CVSS: 7.8EPSS: 0%CPEs: 3EXPL: 0CVE-2025-27219
https://notcve.org/view.php?id=CVE-2025-27219
03 Mar 2025 — 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 parsing extremely large cookies. • https://github.com/rubysec/ruby-advisory-db/blob/master/gems/cgi/CVE-2025-27219.yml • CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 7.8EPSS: 0%CPEs: 3EXPL: 0CVE-2025-27220
https://notcve.org/view.php?id=CVE-2025-27220
03 Mar 2025 — In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the Util#escapeElement method. • https://github.com/rubysec/ruby-advisory-db/blob/master/gems/cgi/CVE-2025-27220.yml • CWE-1333: Inefficient Regular Expression Complexity •
CVSS: 5.3EPSS: 0%CPEs: 4EXPL: 0CVE-2025-27221
https://notcve.org/view.php?id=CVE-2025-27221
03 Mar 2025 — In the URI gem before 1.0.3 for Ruby, the URI handling methods (URI.join, URI#merge, URI#+) have an inadvertent leakage of authentication credentials because userinfo is retained even after changing the host. • https://github.com/rubysec/ruby-advisory-db/blob/master/gems/uri/CVE-2025-27221.yml • CWE-212: Improper Removal of Sensitive Information Before Storage or Transfer •
CVSS: 5.3EPSS: 5%CPEs: 2EXPL: 0CVE-2023-36617 – rubygem-uri: ReDoS vulnerability - upstream's incomplete fix for CVE-2023-28755
https://notcve.org/view.php?id=CVE-2023-36617
29 Jun 2023 — A ReDoS issue was discovered in the URI component before 0.12.2 for Ruby. The URI parser mishandles invalid URLs that have specific characters. There is an increase in execution time for parsing strings to URI objects with rfc2396_parser.rb and rfc3986_parser.rb. NOTE: this issue exists becuse of an incomplete fix for CVE-2023-28755. Version 0.10.3 is also a fixed version. • https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27LUWREIFTP3MQAW7QE4PJM4DPAQJWXF • CWE-185: Incorrect Regular Expression CWE-1333: Inefficient Regular Expression Complexity •
CVSS: 5.3EPSS: 6%CPEs: 8EXPL: 0CVE-2023-28755 – ruby: ReDoS vulnerability in URI
https://notcve.org/view.php?id=CVE-2023-28755
31 Mar 2023 — A ReDoS issue was discovered in the URI component through 0.12.0 in Ruby through 3.2.1. The URI parser mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing strings to URI objects. The fixed versions are 0.12.1, 0.11.1, 0.10.2 and 0.10.0.1. A flaw was found in the rubygem URI. • https://github.com/ruby/uri/releases • CWE-20: Improper Input Validation CWE-1333: Inefficient Regular Expression Complexity •
CVSS: 5.3EPSS: 5%CPEs: 7EXPL: 0CVE-2023-28756 – ruby: ReDoS vulnerability in Time
https://notcve.org/view.php?id=CVE-2023-28756
31 Mar 2023 — A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing strings to Time objects. The fixed versions are 0.1.1 and 0.2.2. A flaw was found in the Time gem and Time library of Ruby. • https://github.com/ruby/time/releases • CWE-20: Improper Input Validation CWE-1333: Inefficient Regular Expression Complexity •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2023-22795 – rubygem-actionpack: Denial of Service in Action Dispatch
https://notcve.org/view.php?id=CVE-2023-22795
09 Feb 2023 — A regular expression based DoS vulnerability in Action Dispatch <6.1.7.1 and <7.0.4.1 related to the If-None-Match header. A specially crafted HTTP If-None-Match header can cause the regular expression engine to enter a state of catastrophic backtracking, when on a version of Ruby below 3.2.0. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability All users running an affected release should either upgrade or use one of the workarounds immediately. A flaw ... • https://discuss.rubyonrails.org/t/cve-2023-22795-possible-redos-based-dos-vulnerability-in-action-dispatch/82118 • CWE-400: Uncontrolled Resource Consumption CWE-1333: Inefficient Regular Expression Complexity •
CVSS: 9.0EPSS: 2%CPEs: 9EXPL: 1CVE-2021-33621 – ruby/cgi-gem: HTTP response splitting in CGI
https://notcve.org/view.php?id=CVE-2021-33621
18 Nov 2022 — 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. La gema cgi anterior a 0.1.0.2, 0.2.x anterior a 0.2.2 y 0.3.x anterior a 0.3.5 para Ruby permite la división de respuestas HTTP. Esto es relevante para aplicaciones que utilizan entradas de usuarios que no son de confianza, ya sea para generar una respuesta HTTP o ... • https://lists.debian.org/debian-lts-announce/2023/06/msg00012.html • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') •
CVSS: 9.8EPSS: 0%CPEs: 2EXPL: 0CVE-2022-28738 – Ruby: Double free in Regexp compilation
https://notcve.org/view.php?id=CVE-2022-28738
09 May 2022 — A double free was found in the Regexp compiler in Ruby 3.x before 3.0.4 and 3.1.x before 3.1.2. If a victim attempts to create a Regexp from untrusted user input, an attacker may be able to write to unexpected memory locations. Se ha encontrado una doble liberación en el compilador de Regexp en Ruby versiones 3.x anteriores a 3.0.4 y versiones 3.1.x anteriores a 3.1.2. Si una víctima intenta crear un Regexp a partir de una entrada de usuario no confiable, un atacante puede ser capaz de escribir en ubicacion... • https://hackerone.com/reports/1220911 • CWE-415: Double Free •
CVSS: 7.5EPSS: 0%CPEs: 9EXPL: 0CVE-2022-28739 – ruby: Buffer overrun in String-to-Float conversion
https://notcve.org/view.php?id=CVE-2022-28739
09 May 2022 — There is a buffer over-read in Ruby before 2.6.10, 2.7.x before 2.7.6, 3.x before 3.0.4, and 3.1.x before 3.1.2. It occurs in String-to-Float conversion, including Kernel#Float and String#to_f. Se presenta una lectura excesiva del búfer en Ruby versiones anteriores a 2.6.10, 2.7.x versiones anteriores a 2.7.6, 3.x versiones anteriores a 3.0.4 y 3.1.x versiones anteriores a 3.1.2. Es producida en la conversión String-to-Float, incluyendo Kernel#Float y String#to_f A buffer overrun vulnerability was found in ... • http://seclists.org/fulldisclosure/2022/Oct/28 • CWE-125: Out-of-bounds Read •