CVE-2026-58392

OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, the NTP GPS page stores the operator-supplied initcmd value in base64 form, applies legacy_html_escape_form_data() to the encoded string, and then uses base64_decode() to decode the value directly into the GPS initialization-command textarea in src/www/services_ntpd_gps.php. Because decoding occurs after escaping, stored HTML remains unescaped at the output sink. A user with page-services-ntp-gps privilege can store a value that closes the textarea, and script executes in the session of any user who later opens the GPS page. The script can read CSRF material and perform authenticated actions, including actions available to an administrator. This issue is fixed in version 26.1.11.

• CWE-79

• https://github.com/opnsense/core/commit/a92d9514b5436c868f8f97138ebed507f6de423c
• https://github.com/opnsense/core/commit/ed04a154dc40967541be1388e9134e451be4199e
• https://github.com/opnsense/core/security/advisories/GHSA-h793-67jm-j4m5
• https://hackerask.com/posts/opnsense
• https://github.com/opnsense/core/security/advisories/GHSA-h793-67jm-j4m5

Published

Oct 15, 2026

Last Modified

Oct 15, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-58381A flaw was found in GIMP's PSP file format parser. A double-…7.3
• CVE-2026-58384A flaw was found in GIMP's PSD parser. An integer overflow i…7.8
• CVE-2026-58389Allocation of Resources Without Limits or Throttling vulnera…7.5
• CVE-2026-5839A vulnerability was identified in PHPGurukul News Portal Pro…4.7
• CVE-2026-58390OPNsense is a FreeBSD based firewall and routing platform. P…8
• CVE-2026-58391OPNsense is a FreeBSD based firewall and routing platform. P…5.4
• CVE-2026-58393OPNsense is a FreeBSD based firewall and routing platform. P…5.9
• CVE-2026-58394OPNsense is a FreeBSD based firewall and routing platform. P…5.2
• CVE-2026-58395OPNsense is a FreeBSD based firewall and routing platform. P…4.3
• CVE-2026-58399@acastellon/auth is an authentication control system for mic…8.7
• CVE-2026-5840A security flaw has been discovered in PHPGurukul News Porta…4.7
• CVE-2026-58400GeoNetwork is a catalog application to manage spatially refe…9.1