In the @digitalocean/do-markdownit package through 1.16.1 (in npm), the callout and fence_environment plugins perform .includes substring matching if allowedClasses or allowedEnvironments is a string (instead of an array).
{ "versions": [ { "introduced": "0" }, { "last_affected": "1.16.1" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-59717.json"