{"cve":"CVE-2026-12108","nvd":{"published":"2026-07-10T09:16:52.417","modified":"2026-07-10T19:17:20.007","status":"Deferred","description":"The Highlighting Code Block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.2.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N","score":4.4},"cwes":["CWE-79"],"references":["https://plugins.trac.wordpress.org/browser/highlighting-code-block/tags/2.1.3/class/loos_hcb.php#L158","https://plugins.trac.wordpress.org/browser/highlighting-code-block/tags/2.1.3/class/loos_hcb_menu.php#L23","https://plugins.trac.wordpress.org/browser/highlighting-code-block/tags/2.1.3/class/loos_hcb_scripts.php#L69","https://plugins.trac.wordpress.org/browser/highlighting-code-block/tags/2.2.0/class/loos_hcb.php#L158","https://plugins.trac.wordpress.org/browser/highlighting-code-block/tags/2.2.0/class/loos_hcb_menu.php#L23"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:44:02.134301115+00:00"},"epss":{"cve":"CVE-2026-12108","score":0.00335,"percentile":0.2688,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}