# CVE-2026-126076: Action Pack: Possible restoration of destroyed sessions in Action Dispatch CacheStore

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

Action Pack is a framework for handling and responding to web requests. Prior to 8.1.4.1 and 8.0.5.2, ActionDispatch::Session::CacheStore writes a session back to the cache at the end of each request that loaded it, without checking that the session's cache entry still exists. When a concurrent request destroys the session, through reset_session on logout or by deleting its cache entry on the server, a request that loaded the session earlier and finishes later restores it under its original session ID. Logout and server-side revocation could therefore fail to end a session, and an attacker who holds a stolen session cookie could keep that session valid across the victim's logout. Applications that use config.session_store :cache_store are affected, with any cache backend. ActionDispatch::Session::CookieStore is not affected, nor is ActionDispatch::Session::MemCacheStore with Dalli 4.0.0 or later, whose session store does not write back a session that was deleted. This issue is fixed in versions 8.1.4.1 and 8.0.5.2.

## Remediation

- fix: actionpack (RubyGems): OSV reports a fixed version 8.1.4.1. Check the advisory for supported release branches. (source: OSV GHSA-2586-8ghr-69fj) — https://github.com/advisories/GHSA-2586-8ghr-69fj
- fix: actionpack (RubyGems): OSV reports a fixed version 8.0.5.2. Check the advisory for supported release branches. (source: OSV GHSA-2586-8ghr-69fj) — https://github.com/advisories/GHSA-2586-8ghr-69fj

## Affected products and versions

- rails / rails: >= 8.1, < 8.1.4.1 (affected); < 8.0.5.2 (affected). Source: CNA: GitHub_M
-  / actionpack (actionpack): 8.1.0 (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-2586-8ghr-69fj
-  / 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-2586-8ghr-69fj

## Severity and prioritization

- CVSS 3.1: 4.2 (medium); CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-613

## Exploit evidence

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

## References

- https://github.com/rails/rails/security/advisories/GHSA-2586-8ghr-69fj (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/rails/rails/commit/5bb5ec66ed8faaf590ffe1222d7a5eb6e9d050f5 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/rails/rails/commit/d479192cf88a8b30a335a8bc25188a2d8e0f8d9f (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/advisories/GHSA-2586-8ghr-69fj (OSV / GitHub Security Advisories; advisory)

- https://osv.dev/vulnerability/GHSA-2586-8ghr-69fj (OSV / GitHub Security Advisories; osv)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-126076; retrieved 2026-11-10; source updated 2026-11-10

- OSV / GitHub Security Advisories: https://osv.dev/vulnerability/GHSA-2586-8ghr-69fj; retrieved 2026-11-10; source updated 2026-11-10

Revision: 54cc934069009f2014f6b3f1d0f04882243206fe039a874be7ba8eedca34e62b

Canonical: https://y2.dev/cve/CVE-2026-126076

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.