Provide references for CVE-2020-4070.
Where can I find more information about CVE-2020-4070?
References are available at: https://github.com/w3c/css-validator/security/advisories/GHSA-wf36-7w73-rh8c, https://github.com/w3c/css-validator/commit/e5c09a9119167d3064db786d5f00d730b584a53b.