CVE-2021-41819: Reliance on Cookies without Validation and Integrity Checking in a Security Decision

January 1, 2022 (updated January 24, 2024)

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

References

hackerone.com/reports/910552
nvd.nist.gov/vuln/detail/CVE-2021-41819
www.ruby-lang.org/en/news/2021/11/24/cookie-prefix-spoofing-in-cgi-cookie-parse-cve-2021-41819/

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