https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-28T23:18:25.421426+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/ghsa-gh9q-2xrm-x6qv GHSA-gh9q-2xrm-x6qv — CGI has Denial of Service (DoS) potential in Cookie.parse 2026-09-28T23:18:25.444125+00:00

Affected: RubyGems: cgi

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 the method could lead to a Denial of Service.

Please update CGI gem to version 0.3.5.1, 0.3.7, 0.4.2 or later.

## Affected versions

cgi gem versions <= 0.3.5, 0.3.6, 0.4.0 and 0.4.1.

## Credits

Thanks to lio346 for discovering this issue. Also thanks to mame for fixing this vulnerability.