Provide references for CVE-2020-26211.
Where can I find more information about CVE-2020-26211?
References are available at: https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4, https://github.com/BookStackApp/BookStack/security/advisories/GHSA-r2cf-8778-3jgp, https://github.com/BookStackApp/BookStack/commit/bbd1384acbe7e52c21f89af69f2dc391c95dbf54, https://www.bookstackapp.com/blog/beta-release-v0-30-4/.