Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Discourse | Rails Multisite | < 4.0.0 |
Related Weaknesses (CWE)
References
- https://github.com/discourse/rails_multisite/commit/c6785cdb5c9277dd2c5ac8d55180PatchThird Party Advisory
- https://github.com/discourse/rails_multisite/security/advisories/GHSA-844m-cpr9-Third Party Advisory
- https://github.com/discourse/rails_multisite/commit/c6785cdb5c9277dd2c5ac8d55180PatchThird Party Advisory
- https://github.com/discourse/rails_multisite/security/advisories/GHSA-844m-cpr9-Third Party Advisory
FAQ
What is CVE-2021-41263?
CVE-2021-41263 is a vulnerability with a CVSS score of 8.3 (HIGH). 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 cooki...
How severe is CVE-2021-41263?
CVE-2021-41263 has been rated HIGH with a CVSS base score of 8.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-41263?
Check the references section above for vendor advisories and patch information. Affected products include: Discourse Rails Multisite.