Provide references for CVE-2018-21018.
Where can I find more information about CVE-2018-21018?
References are available at: https://github.com/tootsuite/mastodon/releases/tag/v2.6.2, https://github.com/tootsuite/mastodon/releases/tag/v2.6.3, https://github.com/tootsuite/mastodon/pull/9329, https://github.com/tootsuite/mastodon/pull/9381.