OPNsense 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.
Read at NIST National Vulnerability Database (CVE API 2.0)
- Product
- FreeBSD / OpenBSD / NetBSD, pfSense / OPNsense
- CVSS
- 5.2
- Fix
- available
- Exposure class
- Operating system, Edge / VPN / firewall
Why it ranks 20 (Routine)
- CVSS 5.2 medium
- Exposed product class: edge / VPN / firewall
- Fix available
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- CVE-2026-58394 on this site · NVD · CVE.org · Vulnpedia
Related coverage
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