Rails is a web-application framework. Starting with version 5.2.0, there is a possible sensitive session information leak in Active Storage. By default, Active Storage sends a Set-Cookie header along with the user's session cookie when serving blobs. It also sets Cache-Control to public. Certain proxies may cache the Set-Cookie, leading to an information leak. The vulnerability is fixed in 7.0.8.1 and 6.1.7.7.
https://security.netapp.com/advisory/ntap-20240510-0013/
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2024-26144.yml
https://github.com/rails/rails/security/advisories/GHSA-8h22-8cf7-hq6g
https://github.com/rails/rails/commit/78fe149509fac5b05e54187aaaef216fbb5fd0d3
https://github.com/rails/rails/commit/723f54566023e91060a67b03353e7c03e7436433