Provide references for CVE-2021-22538.
Where can I find more information about CVE-2021-22538?
References are available at: https://github.com/google/exposure-notifications-verification-server/security/advisories/GHSA-5v95-v8c8-3rh6, https://github.com/google/exposure-notifications-verification-server/commit/eb8cf40b12dbe79304f1133c06fb73419383cd95, https://github.com/google/exposure-notifications-verification-server/releases/tag/v0.23.1, https://github.com/google/exposure-notifications-verification-server/releases/tag/v0.24.0.