{"cve":"CVE-2009-3086","nvd":{"published":"2009-09-08T18:30:00.453","modified":"2026-06-16T23:10:54.483","status":"Modified","description":"A certain algorithm in Ruby on Rails 2.1.0 through 2.2.2, and 2.3.x before 2.3.4, leaks information about the complexity of message-digest signature verification in the cookie store, which might allow remote attackers to forge a digest via multiple attempts.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-200"],"references":["http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00004.html","http://secunia.com/advisories/36600","http://weblog.rubyonrails.org/2009/9/4/timing-weakness-in-ruby-on-rails","http://www.debian.org/security/2011/dsa-2260","http://www.securityfocus.com/bid/37427"],"products":["rubyonrails:rails"],"source":"nvd","synced_at":"2026-10-19T19:54:26.868835795+00:00"},"epss":{"cve":"CVE-2009-3086","score":0.02232,"percentile":0.82766,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-fg9w-g6m4-557j","url":"https://osv.dev/vulnerability/GHSA-fg9w-g6m4-557j","summary":"actionpack and activesupport vulnerable to information leaks","modified":"2024-11-28T05:41:38.733077Z","packages":[{"ecosystem":"RubyGems","name":"actionpack","purl":"pkg:gem/actionpack","ranges":[">=2.1.0 <2.2.3"],"fixed":["2.2.3"]},{"ecosystem":"RubyGems","name":"actionpack","purl":"pkg:gem/actionpack","ranges":[">=2.3.0 <2.3.4"],"fixed":["2.3.4"]},{"ecosystem":"RubyGems","name":"activesupport","purl":"pkg:gem/activesupport","ranges":[">=2.1.0 <2.2.3"],"fixed":["2.2.3"]},{"ecosystem":"RubyGems","name":"activesupport","purl":"pkg:gem/activesupport","ranges":[">=2.3.0 <2.3.4"],"fixed":["2.3.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}