{"id":"CVE-2026-58394","published":"2026-10-15T16:18:18.447","lastModified":"2026-10-15T21:08:49.703","description":"OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, src/www/system_advanced_admin.php reads certificate records into $a_cert but omits that array from legacy_html_escape_form_data() before rendering each certificate descr value in the SSL Certificate selector. The certificate description accepts HTML metacharacters, allowing a user with the page-system-certmanager privilege to store markup that executes when another user opens System Settings Administration. This issue is fixed in version 26.1.11.","cvssScore":5.2,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N","cwes":["CWE-79"],"vendors":[],"products":[],"references":[{"url":"https://github.com/opnsense/core/commit/9d0a590e9c49f4374a5539929b366123f63bc9eb","tags":[]},{"url":"https://github.com/opnsense/core/commit/adcb02f8f68071e636bf9660b2cb8d0229f34674","tags":[]},{"url":"https://github.com/opnsense/core/security/advisories/GHSA-8pgr-x852-qx4j","tags":[]},{"url":"https://hackerask.com/posts/opnsense","tags":[]},{"url":"https://github.com/opnsense/core/security/advisories/GHSA-8pgr-x852-qx4j","tags":[]}],"exploitRefs":[{"url":"https://github.com/opnsense/core/commit/9d0a590e9c49f4374a5539929b366123f63bc9eb","tags":[]},{"url":"https://github.com/opnsense/core/commit/adcb02f8f68071e636bf9660b2cb8d0229f34674","tags":[]},{"url":"https://github.com/opnsense/core/security/advisories/GHSA-8pgr-x852-qx4j","tags":[]},{"url":"https://github.com/opnsense/core/security/advisories/GHSA-8pgr-x852-qx4j","tags":[]}],"hasPoc":true,"ai":null}