An issue was discovered in the wp-code-highlightjs plugin through 0.6.2 for WordPress. wp-admin/options-general.php?page=wp-code-highlight-js allows CSRF, as demonstrated by an XSS payload in the hljsadditionalcss parameter.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-12934.json"