Provide references for CVE-2021-25980.
Where can I find more information about CVE-2021-25980?
References are available at: https://github.com/debiki/talkyard/commit/4067e191a909ed06f250d09a40e43aa5edbb0289, https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25980.