# CVE-2026-126067: Action Pack: Missing SameSite attribute on session cookies from Action Pack session stores

Status: published. Published: 2026-11-10. Updated: 2026-11-13.

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.

## Remediation

- fix: actionpack (rubygems): GitHub reports patched versions 8.1.4.1. Check the advisory for the affected release branch. (source: GitHub GHSA-gmj8-hvj3-49mw) — https://github.com/rails/rails/security/advisories/GHSA-gmj8-hvj3-49mw
- fix: actionpack (rubygems): GitHub reports patched versions 8.0.5.2. Check the advisory for the affected release branch. (source: GitHub GHSA-gmj8-hvj3-49mw) — https://github.com/rails/rails/security/advisories/GHSA-gmj8-hvj3-49mw
- fix: actionpack (RubyGems): OSV reports a fixed version 8.1.4.1. Check the advisory for supported release branches. (source: OSV GHSA-gmj8-hvj3-49mw) — https://github.com/advisories/GHSA-gmj8-hvj3-49mw
- fix: actionpack (RubyGems): OSV reports a fixed version 8.0.5.2. Check the advisory for supported release branches. (source: OSV GHSA-gmj8-hvj3-49mw) — https://github.com/advisories/GHSA-gmj8-hvj3-49mw

## Affected products and versions

- rails / rails: >= 8.1, < 8.1.4.1 (affected); < 8.0.5.2 (affected). Source: CNA: GitHub_M
-  / actionpack (actionpack): >= 8.1, < 8.1.4.1 (affected, GitHub advisory range). Source: GitHub GHSA-gmj8-hvj3-49mw
-  / actionpack (actionpack): < 8.0.5.2 (affected, GitHub advisory range). Source: GitHub GHSA-gmj8-hvj3-49mw
-  / actionpack (actionpack): 8.1.0 (affected, RubyGems); 8.1.0.beta1 (affected, RubyGems); 8.1.0.rc1 (affected, RubyGems); 8.1.1 (affected, RubyGems); 8.1.2 (affected, RubyGems); 8.1.2.1 (affected, RubyGems); 8.1.3 (affected, RubyGems); 8.1.3.1 (affected, RubyGems); 8.1.4 (affected, RubyGems); Ecosystem version events: introduced 8.1.0.beta1; fixed 8.1.4.1. Source: OSV GHSA-gmj8-hvj3-49mw
-  / actionpack (actionpack): 0.9.0 (affected, RubyGems); 0.9.5 (affected, RubyGems); 1.0.0 (affected, RubyGems); 1.0.1 (affected, RubyGems); 1.1.0 (affected, RubyGems); 1.10.1 (affected, RubyGems); 1.10.2 (affected, RubyGems); 1.11.0 (affected, RubyGems); 1.11.1 (affected, RubyGems); 1.11.2 (affected, RubyGems); 1.12.0 (affected, RubyGems); 1.12.1 (affected, RubyGems); 1.12.2 (affected, RubyGems); 1.12.3 (affected, RubyGems); 1.12.4 (affected, RubyGems); 1.12.5 (affected, RubyGems); 1.13.0 (affected, RubyGems); 1.13.1 (affected, RubyGems); 1.13.2 (affected, RubyGems); 1.13.3 (affected, RubyGems); 1.13.4 (affected, RubyGems); 1.13.5 (affected, RubyGems); 1.13.6 (affected, RubyGems); 1.2.0 (affected, RubyGems); 1.3.0 (affected, RubyGems); 1.3.1 (affected, RubyGems); 1.4.0 (affected, RubyGems); 1.5.0 (affected, RubyGems); 1.5.1 (affected, RubyGems); 1.6.0 (affected, RubyGems); 1.7.0 (affected, RubyGems); 1.8.0 (affected, RubyGems); 1.8.1 (affected, RubyGems); 1.9.0 (affected, RubyGems); 1.9.1 (affected, RubyGems); 2.0.0 (affected, RubyGems); 2.0.1 (affected, RubyGems); 2.0.2 (affected, RubyGems); 2.0.4 (affected, RubyGems); 2.0.5 (affected, RubyGems); 2.1.0 (affected, RubyGems); 2.1.1 (affected, RubyGems); 2.1.2 (affected, RubyGems); 2.2.2 (affected, RubyGems); 2.2.3 (affected, RubyGems); 2.3.10 (affected, RubyGems); 2.3.11 (affected, RubyGems); 2.3.12 (affected, RubyGems); 2.3.14 (affected, RubyGems); 2.3.15 (affected, RubyGems); 2.3.16 (affected, RubyGems); 2.3.17 (affected, RubyGems); 2.3.18 (affected, RubyGems); 2.3.2 (affected, RubyGems); 2.3.3 (affected, RubyGems); 2.3.4 (affected, RubyGems); 2.3.5 (affected, RubyGems); 2.3.6 (affected, RubyGems); 2.3.7 (affected, RubyGems); 2.3.8 (affected, RubyGems); 2.3.8.pre1 (affected, RubyGems); 2.3.9 (affected, RubyGems); 2.3.9.pre (affected, RubyGems); 3.0.0 (affected, RubyGems); 3.0.0.beta (affected, RubyGems); 3.0.0.beta2 (affected, RubyGems); 3.0.0.beta3 (affected, RubyGems); 3.0.0.beta4 (affected, RubyGems); 3.0.0.rc (affected, RubyGems); 3.0.0.rc2 (affected, RubyGems); 3.0.1 (affected, RubyGems); 3.0.10 (affected, RubyGems); 3.0.10.rc1 (affected, RubyGems); 3.0.11 (affected, RubyGems); 3.0.12 (affected, RubyGems); 3.0.12.rc1 (affected, RubyGems); 3.0.13 (affected, RubyGems); 3.0.13.rc1 (affected, RubyGems); 3.0.14 (affected, RubyGems); 3.0.15 (affected, RubyGems); 3.0.16 (affected, RubyGems); 3.0.17 (affected, RubyGems); 3.0.18 (affected, RubyGems); 3.0.19 (affected, RubyGems); 3.0.2 (affected, RubyGems); 3.0.20 (affected, RubyGems); 3.0.3 (affected, RubyGems); 3.0.4 (affected, RubyGems); 3.0.4.rc1 (affected, RubyGems); 3.0.5 (affected, RubyGems); 3.0.5.rc1 (affected, RubyGems); 3.0.6 (affected, RubyGems); 3.0.6.rc1 (affected, RubyGems); 3.0.6.rc2 (affected, RubyGems); 3.0.7 (affected, RubyGems); 3.0.7.rc1 (affected, RubyGems); 3.0.7.rc2 (affected, RubyGems); 3.0.8 (affected, RubyGems); 3.0.8.rc1 (affected, RubyGems); 3.0.8.rc2 (affected, RubyGems); 3.0.8.rc4 (affected, RubyGems); 3.0.9 (affected, RubyGems); 3.0.9.rc1 (affected, RubyGems); 3.0.9.rc3 (affected, RubyGems); 3.0.9.rc4 (affected, RubyGems); 3.0.9.rc5 (affected, RubyGems); 3.1.0 (affected, RubyGems); 3.1.0.beta1 (affected, RubyGems); 3.1.0.rc1 (affected, RubyGems); 3.1.0.rc2 (affected, RubyGems); 3.1.0.rc3 (affected, RubyGems); 3.1.0.rc4 (affected, RubyGems); 3.1.0.rc5 (affected, RubyGems); 3.1.0.rc6 (affected, RubyGems); 3.1.0.rc8 (affected, RubyGems); 3.1.1 (affected, RubyGems); 3.1.1.rc1 (affected, RubyGems); 3.1.1.rc2 (affected, RubyGems); 3.1.1.rc3 (affected, RubyGems); 3.1.10 (affected, RubyGems); 3.1.11 (affected, RubyGems); 3.1.12 (affected, RubyGems); 3.1.2 (affected, RubyGems); 3.1.2.rc1 (affected, RubyGems); 3.1.2.rc2 (affected, RubyGems); 3.1.3 (affected, RubyGems); 3.1.4 (affected, RubyGems); 3.1.4.rc1 (affected, RubyGems); 3.1.5 (affected, RubyGems); 3.1.5.rc1 (affected, RubyGems); 3.1.6 (affected, RubyGems); 3.1.7 (affected, RubyGems); 3.1.8 (affected, RubyGems); 3.1.9 (affected, RubyGems); 3.2.0 (affected, RubyGems); 3.2.0.rc1 (affected, RubyGems); 3.2.0.rc2 (affected, RubyGems); 3.2.1 (affected, RubyGems); 3.2.10 (affected, RubyGems); 3.2.11 (affected, RubyGems); 3.2.12 (affected, RubyGems); 3.2.13 (affected, RubyGems); 3.2.13.rc1 (affected, RubyGems); 3.2.13.rc2 (affected, RubyGems); 3.2.14 (affected, RubyGems); 3.2.14.rc1 (affected, RubyGems); 3.2.14.rc2 (affected, RubyGems); 3.2.15 (affected, RubyGems); 3.2.15.rc1 (affected, RubyGems); 3.2.15.rc2 (affected, RubyGems); 3.2.15.rc3 (affected, RubyGems); 3.2.16 (affected, RubyGems); 3.2.17 (affected, RubyGems); 3.2.18 (affected, RubyGems); 3.2.19 (affected, RubyGems); 3.2.2 (affected, RubyGems); 3.2.2.rc1 (affected, RubyGems); 3.2.20 (affected, RubyGems); 3.2.21 (affected, RubyGems); 3.2.22 (affected, RubyGems); 3.2.22.1 (affected, RubyGems); 3.2.22.2 (affected, RubyGems); 3.2.22.3 (affected, RubyGems); 3.2.22.4 (affected, RubyGems); 3.2.22.5 (affected, RubyGems); 3.2.3 (affected, RubyGems); 3.2.3.rc1 (affected, RubyGems); 3.2.3.rc2 (affected, RubyGems); 3.2.4 (affected, RubyGems); 3.2.4.rc1 (affected, RubyGems); 3.2.5 (affected, RubyGems); 3.2.6 (affected, RubyGems); 3.2.7 (affected, RubyGems); 3.2.7.rc1 (affected, RubyGems); 3.2.8 (affected, RubyGems); 3.2.8.rc1 (affected, RubyGems); 3.2.8.rc2 (affected, RubyGems); 3.2.9 (affected, RubyGems); 3.2.9.rc1 (affected, RubyGems); 3.2.9.rc2 (affected, RubyGems); 3.2.9.rc3 (affected, RubyGems); 4.0.0 (affected, RubyGems); 4.0.0.beta1 (affected, RubyGems); 4.0.0.rc1 (affected, RubyGems); 4.0.0.rc2 (affected, RubyGems); 4.0.1 (affected, RubyGems); 4.0.1.rc1 (affected, RubyGems); 4.0.1.rc2 (affected, RubyGems); 4.0.1.rc3 (affected, RubyGems); 4.0.1.rc4 (affected, RubyGems); 4.0.10 (affected, RubyGems); 4.0.10.rc1 (affected, RubyGems); 4.0.10.rc2 (affected, RubyGems); 4.0.11 (affected, RubyGems); 4.0.11.1 (affected, RubyGems); 4.0.12 (affected, RubyGems); 4.0.13 (affected, RubyGems); 4.0.13.rc1 (affected, RubyGems); 4.0.2 (affected, RubyGems); 4.0.3 (affected, RubyGems); 4.0.4 (affected, RubyGems); 4.0.4.rc1 (affected, RubyGems); 4.0.5 (affected, RubyGems); 4.0.6 (affected, RubyGems); 4.0.6.rc1 (affected, RubyGems); 4.0.6.rc2 (affected, RubyGems); 4.0.6.rc3 (affected, RubyGems); 4.0.7 (affected, RubyGems); 4.0.8 (affected, RubyGems); 4.0.9 (affected, RubyGems); 4.1.0 (affected, RubyGems); 4.1.0.beta1 (affected, RubyGems); 4.1.0.beta2 (affected, RubyGems); 4.1.0.rc1 (affected, RubyGems); 4.1.0.rc2 (affected, RubyGems); 4.1.1 (affected, RubyGems); 4.1.10 (affected, RubyGems); 4.1.10.rc1 (affected, RubyGems); 4.1.10.rc2 (affected, RubyGems); 4.1.10.rc3 (affected, RubyGems); 4.1.10.rc4 (affected, RubyGems); 4.1.11 (affected, RubyGems); 4.1.12 (affected, RubyGems); 4.1.12.rc1 (affected, RubyGems); 4.1.13 (affected, RubyGems); 4.1.13.rc1 (affected, RubyGems); 4.1.14 (affected, RubyGems); 4.1.14.1 (affected, RubyGems); 4.1.14.2 (affected, RubyGems); 4.1.14.rc1 (affected, RubyGems); 4.1.14.rc2 (affected, RubyGems); 4.1.15 (affected, RubyGems); 4.1.15.rc1 (affected, RubyGems); 4.1.16 (affected, RubyGems); 4.1.16.rc1 (affected, RubyGems); 4.1.2 (affected, RubyGems); 4.1.2.rc1 (affected, RubyGems); 4.1.2.rc2 (affected, RubyGems); 4.1.2.rc3 (affected, RubyGems); 4.1.3 (affected, RubyGems); 4.1.4 (affected, RubyGems); 4.1.5 (affected, RubyGems); 4.1.6 (affected, RubyGems); 4.1.6.rc1 (affected, RubyGems); 4.1.6.rc2 (affected, RubyGems); 4.1.7 (affected, RubyGems); 4.1.7.1 (affected, RubyGems); 4.1.8 (affected, RubyGems); 4.1.9 (affected, RubyGems); 4.1.9.rc1 (affected, RubyGems); 4.2.0 (affected, RubyGems); 4.2.0.beta1 (affected, RubyGems); 4.2.0.beta2 (affected, RubyGems); 4.2.0.beta3 (affected, RubyGems); 4.2.0.beta4 (affected, RubyGems); 4.2.0.rc1 (affected, RubyGems); 4.2.0.rc2 (affected, RubyGems); 4.2.0.rc3 (affected, RubyGems); 4.2.1 (affected, RubyGems); 4.2.1.rc1 (affected, RubyGems); 4.2.1.rc2 (affected, RubyGems); 4.2.1.rc3 (affected, RubyGems); 4.2.1.rc4 (affected, RubyGems); 4.2.10 (affected, RubyGems); 4.2.10.rc1 (affected, RubyGems); 4.2.11 (affected, RubyGems); 4.2.11.1 (affected, RubyGems); 4.2.11.2 (affected, RubyGems); 4.2.11.3 (affected, RubyGems); 4.2.2 (affected, RubyGems); 4.2.3 (affected, RubyGems); 4.2.3.rc1 (affected, RubyGems); 4.2.4 (affected, RubyGems); 4.2.4.rc1 (affected, RubyGems); 4.2.5 (affected, RubyGems); 4.2.5.1 (affected, RubyGems); 4.2.5.2 (affected, RubyGems); 4.2.5.rc1 (affected, RubyGems); 4.2.5.rc2 (affected, RubyGems); 4.2.6 (affected, RubyGems); 4.2.6.rc1 (affected, RubyGems); 4.2.7 (affected, RubyGems); 4.2.7.1 (affected, RubyGems); 4.2.7.rc1 (affected, RubyGems); 4.2.8 (affected, RubyGems); 4.2.8.rc1 (affected, RubyGems); 4.2.9 (affected, RubyGems); 4.2.9.rc1 (affected, RubyGems); 4.2.9.rc2 (affected, RubyGems); 5.0.0 (affected, RubyGems); 5.0.0.1 (affected, RubyGems); 5.0.0.beta1 (affected, RubyGems); 5.0.0.beta1.1 (affected, RubyGems); 5.0.0.beta2 (affected, RubyGems); 5.0.0.beta3 (affected, RubyGems); 5.0.0.beta4 (affected, RubyGems); 5.0.0.racecar1 (affected, RubyGems); 5.0.0.rc1 (affected, RubyGems); 5.0.0.rc2 (affected, RubyGems); 5.0.1 (affected, RubyGems); 5.0.1.rc1 (affected, RubyGems); 5.0.1.rc2 (affected, RubyGems); 5.0.2 (affected, RubyGems); 5.0.2.rc1 (affected, RubyGems); 5.0.3 (affected, RubyGems); 5.0.4 (affected, RubyGems); 5.0.4.rc1 (affected, RubyGems); 5.0.5 (affected, RubyGems); 5.0.5.rc1 (affected, RubyGems); 5.0.5.rc2 (affected, RubyGems); 5.0.6 (affected, RubyGems); 5.0.6.rc1 (affected, RubyGems); 5.0.7 (affected, RubyGems); 5.0.7.1 (affected, RubyGems); 5.0.7.2 (affected, RubyGems); 5.1.0 (affected, RubyGems); 5.1.0.beta1 (affected, RubyGems); 5.1.0.rc1 (affected, RubyGems); 5.1.0.rc2 (affected, RubyGems); 5.1.1 (affected, RubyGems); 5.1.2 (affected, RubyGems); 5.1.2.rc1 (affected, RubyGems); 5.1.3 (affected, RubyGems); 5.1.3.rc1 (affected, RubyGems); 5.1.3.rc2 (affected, RubyGems); 5.1.3.rc3 (affected, RubyGems); 5.1.4 (affected, RubyGems); 5.1.4.rc1 (affected, RubyGems); 5.1.5 (affected, RubyGems); 5.1.5.rc1 (affected, RubyGems); 5.1.6 (affected, RubyGems); 5.1.6.1 (affected, RubyGems); 5.1.6.2 (affected, RubyGems); 5.1.7 (affected, RubyGems); 5.1.7.rc1 (affected, RubyGems); 5.2.0 (affected, RubyGems); 5.2.0.beta1 (affected, RubyGems); 5.2.0.beta2 (affected, RubyGems); 5.2.0.rc1 (affected, RubyGems); 5.2.0.rc2 (affected, RubyGems); 5.2.1 (affected, RubyGems); 5.2.1.1 (affected, RubyGems); 5.2.1.rc1 (affected, RubyGems); 5.2.2 (affected, RubyGems); 5.2.2.1 (affected, RubyGems); 5.2.2.rc1 (affected, RubyGems); 5.2.3 (affected, RubyGems); 5.2.3.rc1 (affected, RubyGems); 5.2.4 (affected, RubyGems); 5.2.4.1 (affected, RubyGems); 5.2.4.2 (affected, RubyGems); 5.2.4.3 (affected, RubyGems); 5.2.4.4 (affected, RubyGems); 5.2.4.5 (affected, RubyGems); 5.2.4.6 (affected, RubyGems); 5.2.4.rc1 (affected, RubyGems); 5.2.5 (affected, RubyGems); 5.2.6 (affected, RubyGems); 5.2.6.1 (affected, RubyGems); 5.2.6.2 (affected, RubyGems); 5.2.6.3 (affected, RubyGems); 5.2.7 (affected, RubyGems); 5.2.7.1 (affected, RubyGems); 5.2.8 (affected, RubyGems); 5.2.8.1 (affected, RubyGems); 6.0.0 (affected, RubyGems); 6.0.0.beta1 (affected, RubyGems); 6.0.0.beta2 (affected, RubyGems); 6.0.0.beta3 (affected, RubyGems); 6.0.0.rc1 (affected, RubyGems); 6.0.0.rc2 (affected, RubyGems); 6.0.1 (affected, RubyGems); 6.0.1.rc1 (affected, RubyGems); 6.0.2 (affected, RubyGems); 6.0.2.1 (affected, RubyGems); 6.0.2.2 (affected, RubyGems); 6.0.2.rc1 (affected, RubyGems); 6.0.2.rc2 (affected, RubyGems); 6.0.3 (affected, RubyGems); 6.0.3.1 (affected, RubyGems); 6.0.3.2 (affected, RubyGems); 6.0.3.3 (affected, RubyGems); 6.0.3.4 (affected, RubyGems); 6.0.3.5 (affected, RubyGems); 6.0.3.6 (affected, RubyGems); 6.0.3.7 (affected, RubyGems); 6.0.3.rc1 (affected, RubyGems); 6.0.4 (affected, RubyGems); 6.0.4.1 (affected, RubyGems); 6.0.4.2 (affected, RubyGems); 6.0.4.3 (affected, RubyGems); 6.0.4.4 (affected, RubyGems); 6.0.4.5 (affected, RubyGems); 6.0.4.6 (affected, RubyGems); 6.0.4.7 (affected, RubyGems); 6.0.4.8 (affected, RubyGems); 6.0.5 (affected, RubyGems); 6.0.5.1 (affected, RubyGems); 6.0.6 (affected, RubyGems); 6.0.6.1 (affected, RubyGems); 6.1.0 (affected, RubyGems); 6.1.0.rc1 (affected, RubyGems); 6.1.0.rc2 (affected, RubyGems); 6.1.1 (affected, RubyGems); 6.1.2 (affected, RubyGems); 6.1.2.1 (affected, RubyGems); 6.1.3 (affected, RubyGems); 6.1.3.1 (affected, RubyGems); 6.1.3.2 (affected, RubyGems); 6.1.4 (affected, RubyGems); 6.1.4.1 (affected, RubyGems); 6.1.4.2 (affected, RubyGems); 6.1.4.3 (affected, RubyGems); 6.1.4.4 (affected, RubyGems); 6.1.4.5 (affected, RubyGems); 6.1.4.6 (affected, RubyGems); 6.1.4.7 (affected, RubyGems); 6.1.5 (affected, RubyGems); 6.1.5.1 (affected, RubyGems); 6.1.6 (affected, RubyGems); 6.1.6.1 (affected, RubyGems); 6.1.7 (affected, RubyGems); 6.1.7.1 (affected, RubyGems); 6.1.7.10 (affected, RubyGems); 6.1.7.2 (affected, RubyGems); 6.1.7.3 (affected, RubyGems); 6.1.7.4 (affected, RubyGems); 6.1.7.5 (affected, RubyGems); 6.1.7.6 (affected, RubyGems); 6.1.7.7 (affected, RubyGems); 6.1.7.8 (affected, RubyGems); 6.1.7.9 (affected, RubyGems); 7.0.0 (affected, RubyGems); 7.0.0.alpha1 (affected, RubyGems); 7.0.0.alpha2 (affected, RubyGems); 7.0.0.rc1 (affected, RubyGems); 7.0.0.rc2 (affected, RubyGems); 7.0.0.rc3 (affected, RubyGems); 7.0.1 (affected, RubyGems); 7.0.10 (affected, RubyGems); 7.0.2 (affected, RubyGems); 7.0.2.1 (affected, RubyGems); 7.0.2.2 (affected, RubyGems); 7.0.2.3 (affected, RubyGems); 7.0.2.4 (affected, RubyGems); 7.0.3 (affected, RubyGems); 7.0.3.1 (affected, RubyGems); 7.0.4 (affected, RubyGems); 7.0.4.1 (affected, RubyGems); 7.0.4.2 (affected, RubyGems); 7.0.4.3 (affected, RubyGems); 7.0.5 (affected, RubyGems); 7.0.5.1 (affected, RubyGems); 7.0.6 (affected, RubyGems); 7.0.7 (affected, RubyGems); 7.0.7.1 (affected, RubyGems); 7.0.7.2 (affected, RubyGems); 7.0.8 (affected, RubyGems); 7.0.8.1 (affected, RubyGems); 7.0.8.2 (affected, RubyGems); 7.0.8.3 (affected, RubyGems); 7.0.8.4 (affected, RubyGems); 7.0.8.5 (affected, RubyGems); 7.0.8.6 (affected, RubyGems); 7.0.8.7 (affected, RubyGems); 7.1.0 (affected, RubyGems); 7.1.0.beta1 (affected, RubyGems); 7.1.0.rc1 (affected, RubyGems); 7.1.0.rc2 (affected, RubyGems); 7.1.1 (affected, RubyGems); 7.1.2 (affected, RubyGems); 7.1.3 (affected, RubyGems); 7.1.3.1 (affected, RubyGems); 7.1.3.2 (affected, RubyGems); 7.1.3.3 (affected, RubyGems); 7.1.3.4 (affected, RubyGems); 7.1.4 (affected, RubyGems); 7.1.4.1 (affected, RubyGems); 7.1.4.2 (affected, RubyGems); 7.1.5 (affected, RubyGems); 7.1.5.1 (affected, RubyGems); 7.1.5.2 (affected, RubyGems); 7.1.6 (affected, RubyGems); 7.2.0 (affected, RubyGems); 7.2.0.beta1 (affected, RubyGems); 7.2.0.beta2 (affected, RubyGems); 7.2.0.beta3 (affected, RubyGems); 7.2.0.rc1 (affected, RubyGems); 7.2.1 (affected, RubyGems); 7.2.1.1 (affected, RubyGems); 7.2.1.2 (affected, RubyGems); 7.2.2 (affected, RubyGems); 7.2.2.1 (affected, RubyGems); 7.2.2.2 (affected, RubyGems); 7.2.3 (affected, RubyGems); 7.2.3.1 (affected, RubyGems); 7.2.3.2 (affected, RubyGems); 7.2.4 (affected, RubyGems); 8.0.0 (affected, RubyGems); 8.0.0.1 (affected, RubyGems); 8.0.0.beta1 (affected, RubyGems); 8.0.0.rc1 (affected, RubyGems); 8.0.0.rc2 (affected, RubyGems); 8.0.1 (affected, RubyGems); 8.0.2 (affected, RubyGems); 8.0.2.1 (affected, RubyGems); 8.0.3 (affected, RubyGems); 8.0.4 (affected, RubyGems); 8.0.4.1 (affected, RubyGems); 8.0.5 (affected, RubyGems); 8.0.5.1 (affected, RubyGems); Ecosystem version events: introduced 0; fixed 8.0.5.2. Source: OSV GHSA-gmj8-hvj3-49mw

## Severity and prioritization

- CVSS 3.1: 3.1 (low); CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N; source: CNA: GitHub_M

- CVSS 3.1: 3.1 (low); CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N; source: NVD: security-advisories@github.com

- CISA KEV: No listing in collected sources

- EPSS: 0.16% as of 2026-11-13; percentile 5.72%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-352

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/rails/rails/security/advisories/GHSA-gmj8-hvj3-49mw (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/rails/rails/commit/2d9f502df941e31ce9bad0e846564f49396bed46 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/rails/rails/commit/f2392996be723708271a8d30bfcf0edc221e53ef (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/rails/rails/releases/tag/v8.0.5.2 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/rails/rails/releases/tag/v8.1.4.1 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/rails/rails/commit/2d9f502df941e31ce9bad0e846564f49396bed46 (security-advisories@github.com)

- https://github.com/rails/rails/commit/f2392996be723708271a8d30bfcf0edc221e53ef (security-advisories@github.com)

- https://github.com/rails/rails/releases/tag/v8.0.5.2 (security-advisories@github.com)

- https://github.com/rails/rails/releases/tag/v8.1.4.1 (security-advisories@github.com)

- https://github.com/rails/rails/security/advisories/GHSA-gmj8-hvj3-49mw (security-advisories@github.com)

- https://github.com/rails/rails/security/advisories/GHSA-gmj8-hvj3-49mw (GitHub Security Advisories; advisory)

- https://github.com/advisories/GHSA-gmj8-hvj3-49mw (OSV / GitHub Security Advisories; advisory)

- https://osv.dev/vulnerability/GHSA-gmj8-hvj3-49mw (OSV / GitHub Security Advisories; osv)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-126067; retrieved 2026-11-13; source updated 2026-11-13

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-126067; retrieved 2026-11-13; source updated 2026-11-13

- GitHub Security Advisories: https://github.com/rails/rails/security/advisories/GHSA-gmj8-hvj3-49mw; retrieved 2026-11-13; source updated 2026-11-10

- OSV / GitHub Security Advisories: https://osv.dev/vulnerability/GHSA-gmj8-hvj3-49mw; retrieved 2026-11-13; source updated 2026-11-10

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-126067; retrieved 2026-11-13; source updated Not reported

Revision: 4439f9e7e2f2b7c35d370cb82c6a2d3a60539cbfb416e036b5ccc166a0f7502c

Canonical: https://y2.dev/cve/CVE-2026-126067

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