CVE-2026-58394
mediumOPNsense is a FreeBSD based firewall and routing platform.
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:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/opnsense/core/commit/9d0a590e9c49f4374a5539929b366123f63bc9eb security-advisories@github.com
- https://github.com/opnsense/core/commit/adcb02f8f68071e636bf9660b2cb8d0229f34674 security-advisories@github.com
- https://github.com/opnsense/core/security/advisories/GHSA-8pgr-x852-qx4j security-advisories@github.com
- https://hackerask.com/posts/opnsense security-advisories@github.com
- https://github.com/opnsense/core/security/advisories/GHSA-8pgr-x852-qx4j 134c704f-9b21-4f2e-91b3-4a467353bcc0