system
Provide references for <CVE-2018-21018>.
user
Where can I find more information about <CVE-2018-21018>?
assistant
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.