Provide references for CVE-2021-4263.
Where can I find more information about CVE-2021-4263?
References are available at: https://vuldb.com/?id.216461, https://vuldb.com/?ctiid.216461, https://github.com/leanote/leanote/commit/0f9733c890077942150696dcc6d2b1482b7a0a19.