{"id":"DEBIAN-CVE-2026-126067","details":"Action Pack is a framework for handling and responding to web requests. Prior to 8.1.4.1 and 8.0.5.2, Action Pack session stores other than ActionDispatch::Session::CookieStore (CacheStore, MemCacheStore, and third-party stores built on AbstractStore, AbstractSecureStore or the session mixins) write the session cookie without a SameSite attribute, regardless of config.action_dispatch.cookies_same_site_protection, which defaults to :lax. Only CookieStore applies the configured policy. In browsers that do not treat a cookie without the attribute as SameSite=Lax, a cross-site request could carry the session cookie, possibly leading to cross-site request forgery against actions that do not verify an authenticity token, such as those of API-only applications. Applications are affected when they use a session store other than CookieStore and do not pass same_site: to config.session_store. This issue is fixed in versions 8.1.4.1 and 8.0.5.2.","modified":"2026-11-11T11:00:06.840138271Z","published":"2026-11-10T21:19:24.653Z","upstream":["CVE-2026-126067"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-126067"}],"affected":[{"package":{"name":"rails","ecosystem":"Debian:12","purl":"pkg:deb/debian/rails?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:6.1.7.10+dfsg-1~deb12u1","2:6.1.7.10+dfsg-1~deb12u2","2:6.1.7.10+dfsg-1~deb12u3","2:6.1.7.3+dfsg-1","2:6.1.7.3+dfsg-10","2:6.1.7.3+dfsg-11","2:6.1.7.3+dfsg-12","2:6.1.7.3+dfsg-13","2:6.1.7.3+dfsg-2","2:6.1.7.3+dfsg-2~deb12u1","2:6.1.7.3+dfsg-3","2:6.1.7.3+dfsg-4","2:6.1.7.3+dfsg-5","2:6.1.7.3+dfsg-6","2:6.1.7.3+dfsg-7","2:6.1.7.3+dfsg-7~exp1","2:6.1.7.3+dfsg-8","2:6.1.7.3+dfsg-9","2:7.2.2.1+dfsg-1","2:7.2.2.1+dfsg-1~exp1","2:7.2.2.1+dfsg-1~exp2","2:7.2.2.1+dfsg-1~exp3","2:7.2.2.1+dfsg-1~exp4","2:7.2.2.1+dfsg-1~exp6","2:7.2.2.1+dfsg-2","2:7.2.2.1+dfsg-3","2:7.2.2.1+dfsg-4","2:7.2.2.1+dfsg-5","2:7.2.2.1+dfsg-6","2:7.2.2.1+dfsg-7","2:7.2.2.2+dfsg-1","2:7.2.2.2+dfsg-2","2:7.2.2.2+dfsg-2~deb13u1","2:7.2.2.2+dfsg-2~deb13u2","2:7.2.3+dfsg-1","2:7.2.3+dfsg-2","2:7.2.3+dfsg-3","2:7.2.3.1+dfsg-1","2:7.2.3.2+dfsg-1","2:7.2.3.2+dfsg-2","2:7.2.3.2+dfsg-3","2:7.2.4+dfsg-1","2:7.2.4+dfsg-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-126067.json"}},{"package":{"name":"rails","ecosystem":"Debian:13","purl":"pkg:deb/debian/rails?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:7.2.2.1+dfsg-7","2:7.2.2.2+dfsg-1","2:7.2.2.2+dfsg-2","2:7.2.2.2+dfsg-2~deb13u1","2:7.2.2.2+dfsg-2~deb13u2","2:7.2.3+dfsg-1","2:7.2.3+dfsg-2","2:7.2.3+dfsg-3","2:7.2.3.1+dfsg-1","2:7.2.3.2+dfsg-1","2:7.2.3.2+dfsg-2","2:7.2.3.2+dfsg-3","2:7.2.4+dfsg-1","2:7.2.4+dfsg-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-126067.json"}},{"package":{"name":"rails","ecosystem":"Debian:14","purl":"pkg:deb/debian/rails?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:7.2.2.1+dfsg-7","2:7.2.2.2+dfsg-1","2:7.2.2.2+dfsg-2","2:7.2.2.2+dfsg-2~deb13u1","2:7.2.2.2+dfsg-2~deb13u2","2:7.2.3+dfsg-1","2:7.2.3+dfsg-2","2:7.2.3+dfsg-3","2:7.2.3.1+dfsg-1","2:7.2.3.2+dfsg-1","2:7.2.3.2+dfsg-2","2:7.2.3.2+dfsg-3","2:7.2.4+dfsg-1","2:7.2.4+dfsg-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-126067.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N"}]}