Rails Multisite secure/signed cookies share secrets between sites in a multi-site application

CAO 8.8CVE-2021-41263 · GHSA-844m-cpr9-jcmh · Công bố 15/11/2021 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2021-41263 là lỗ hổng mức CAO (CVSS 8.8) ảnh hưởng rails_multisite, rails multisite (discourse).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.63%, cao hơn 50.1% các lỗ hổng khác.
Cách xử lý: cập nhật lên 4.0.0 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
rails_multisite RubyGems	`< 4.0.0`	`4.0.0`
rails multisite discourse	`< 4.0.0`	`4.0.0`

Mô tả

Impact

This vulnerability impacts any Rails applications using rails_multisite alongside Rails' signed/encrypted cookies. Depending on how the application makes use of these cookies, it may be possible for an attacker to re-use cookies on different 'sites' within a multi-site Rails application.

Patches

The issue has been patched in v4 of the rails_multisite gem. Note that this upgrade will invalidate all previous signed/encrypted cookies. The impact of this invalidation will vary based on the application architecture.

Mô tả của NVD

rails_multisite provides multi-db support for Rails applications. In affected versions this vulnerability impacts any Rails applications using `rails_multisite` alongside Rails' signed/encrypted cookies. Depending on how the application makes use of these cookies, it may be possible for an attacker to re-use cookies on different 'sites' within a multi-site Rails application. The issue has been patched in v4 of the `rails_multisite` gem. Note that this upgrade will invalidate all previous signed/encrypted cookies. The impact of this invalidation will vary based on the application architecture.