Provide references for CVE-2021-35210.
Where can I find more information about CVE-2021-35210?
References are available at: https://contao.org/en/security-advisories/cross-site-scripting-in-the-system-log-2021.html, https://github.com/contao/contao/security/advisories/GHSA-h58v-c6rf-g9f7.