Provide references for CVE-2019-18887.
Where can I find more information about CVE-2019-18887?
References are available at: https://symfony.com/blog/symfony-4-3-8-released, https://github.com/symfony/symfony/releases/tag/v4.3.8, https://symfony.com/blog/cve-2019-18887-use-constant-time-comparison-in-urisigner, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DZNXRVHDQBNZQUCNRVZICPPBFRAUWUJX/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VXEAOEANNIVYANTMOJ42NKSU6BGNBULZ/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA/.