An issue was discovered in the comrak crate before 0.9.1 for Rust. XSS can occur because the protection mechanism for data: and javascript: URIs is case-sensitive, allowing (for example) Data: to be used in an attack.
{ "versions": [ { "introduced": "0" }, { "fixed": "0.9.1" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27671.json"