{"cve":"CVE-2011-2931","nvd":{"published":"2011-08-29T18:55:01.503","modified":"2026-06-16T23:32:16.583","status":"Modified","description":"Cross-site scripting (XSS) vulnerability in the strip_tags helper in actionpack/lib/action_controller/vendor/html-scanner/html/node.rb in Ruby on Rails before 2.3.13, 3.0.x before 3.0.10, and 3.1.x before 3.1.0.rc5 allows remote attackers to inject arbitrary web script or HTML via a tag with an invalid name.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-79"],"references":["http://groups.google.com/group/rubyonrails-security/msg/fd41ab62966e0fd1?dmode=source&output=gplain","http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065109.html","http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065137.html","http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065212.html","http://secunia.com/advisories/45921"],"products":["rubyonrails:rails","rubyonrails:ruby_on_rails"],"source":"nvd","synced_at":"2026-10-19T19:58:50.521460154+00:00"},"epss":{"cve":"CVE-2011-2931","score":0.02492,"percentile":0.84657,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-v5jg-558j-q67c","url":"https://osv.dev/vulnerability/GHSA-v5jg-558j-q67c","summary":"actionpack Cross-site Scripting vulnerability","modified":"2024-11-29T05:42:08.837451Z","packages":[{"ecosystem":"RubyGems","name":"actionpack","purl":"pkg:gem/actionpack","ranges":[">=2.0.0 <2.3.13"],"fixed":["2.3.13"]},{"ecosystem":"RubyGems","name":"actionpack","purl":"pkg:gem/actionpack","ranges":[">=3.0.0 <3.0.10"],"fixed":["3.0.10"]}]}],"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."]}