CVE-2026-58394
OPNsense: Stored XSS in Administration Settings via Certificate Description
- State
- Published
- Severity
- 5.2 Medium
- Published
- Oct 15, 2026
- Updated
- Oct 15, 2026
- Reserved
- Jun 30, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.2 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N | GitHub_M |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
coreopnsense |
|
References
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