CVE-2026-126067 | BDVDB-2026-404684 Detail
railsrails
Description#
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.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact low, availability impact none. Attack vector: network.
Weaknesses#
- CWE-352 Cross-Site Request Forgery (CSRF)
References#
- https://github.com/rails/rails/security/advisories/GHSA-gmj8-hvj3-49mw
- https://github.com/rails/rails/commit/2d9f502df941e31ce9bad0e846564f49396bed46
- https://github.com/rails/rails/commit/f2392996be723708271a8d30bfcf0edc221e53ef
- https://github.com/rails/rails/releases/tag/v8.0.5.2
- https://github.com/rails/rails/releases/tag/v8.1.4.1
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.