Vulnerability Details 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 parsing extremely large cookies.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 38.2%
CVSS Severity
CVSS v3 Score 5.8
References
Products affected by CVE-2025-27219
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cpe:2.3:a:ruby-lang:cgi:0.1.0
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cpe:2.3:a:ruby-lang:cgi:0.1.1
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cpe:2.3:a:ruby-lang:cgi:0.2.0
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cpe:2.3:a:ruby-lang:cgi:0.2.1
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cpe:2.3:a:ruby-lang:cgi:0.3.0
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cpe:2.3:a:ruby-lang:cgi:0.3.1
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cpe:2.3:a:ruby-lang:cgi:0.3.6
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cpe:2.3:a:ruby-lang:cgi:0.4.0
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cpe:2.3:a:ruby-lang:cgi:0.4.1