CVE-2021-33621

The CVE-2021-33621 entry concerns the Ruby CGI gem: HTTP response splitting in cgi-gem versions before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5. The underlying issue is in how untrusted input can affect an HTTP response or CGI::Cookie creation, enabling response-splitting exploits. Aff...

CVE-2022-28739

CVE-2022-28739 describes a buffer over-read during String-to-Float conversion in Ruby. Affected are Ruby versions: 2.6 and earlier, 2.7.x prior to 2.7.6, 3.x prior to 3.0.4, and 3.1.x prior to 3.1.2. The flaw affects conversion paths such as Kernel#Float and String#to_f and can lead to memory saf...

CVE-2021-41819

CVE-2021-41819 affects Ruby and the CGI::Cookie.parse function; Ruby up to 2.6.8 (and CGI gem up to 0.3.0) mishandle security prefixes in cookie names, enabling cookie-prefix spoofing. Public advisories confirm this and list affected Ruby versions across multiple distributions (AL2, AL2 Ruby3.0 e...

CVE-2021-41817

CVE-2021-41817 is a Ruby-related ReDoS in Date parsing. The vulnerability affects Ruby’s date parsing pathways (notably date parsing methods) up to versions around 3.2.0, enabling denial-of-service via crafted date strings. The fixed releases cited in the sources are 3.2.1, 3.1.2, 3.0.2, and 2.0....

CVE-2022-28738

Ruby 3.x before 3.0.4 and 3.1.x before 3.1.2 contains a double-free in the Regexp compiler when compiling a Regexp from untrusted user input, potentially allowing memory corruption. The issue is fixed in Ruby 3.0.4 and 3.1.2+; affected releases include Ruby 3.x up to those pre-fix versions. Sever...