{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"rails","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":[],"id":"tcs_01M5N9V58JWF9ZYYBFSNCE5RVF","modified_at":"2026-10-23T17:47:39.892405362Z","published_at":"2011-08-29T18:55:01.707Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2011-3187","https://security-tracker.debian.org/tracker/CVE-2011-3187"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2011-3187#Debian:14/rails","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2011-3187"}],"summary":"The to_s method in actionpack/lib/action_dispatch/middleware/remote_ip.rb in Ruby on Rails 3.0.5 does not validate the X-Forwarded-For header in requests from IP addresses on a Class C network, which"}