{"cve":"CVE-2026-58394","nvd":{"published":"2026-10-15T16:18:18.447","modified":"2026-10-15T21:08:49.703","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N","score":5.2},"cwes":["CWE-79"],"references":["https://github.com/opnsense/core/commit/9d0a590e9c49f4374a5539929b366123f63bc9eb","https://github.com/opnsense/core/commit/adcb02f8f68071e636bf9660b2cb8d0229f34674","https://github.com/opnsense/core/security/advisories/GHSA-8pgr-x852-qx4j","https://hackerask.com/posts/opnsense","https://github.com/opnsense/core/security/advisories/GHSA-8pgr-x852-qx4j"],"products":[],"source":"nvd","synced_at":"2026-10-19T23:00:53.604569364+00:00"},"epss":{"cve":"CVE-2026-58394","score":0.00239,"percentile":0.14854,"date":"2026-10-25"},"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."]}