Provide references for CVE-2021-29503.
Where can I find more information about CVE-2021-29503?
References are available at: https://github.com/hedgedoc/hedgedoc/security/advisories/GHSA-gjg7-4j2h-94fq, https://github.com/hedgedoc/hedgedoc/commit/01dad5821ee28377ebe640c6c72c3e0bb0d51ea7, https://github.com/hedgedoc/hedgedoc/releases/tag/1.8.2.