CVE Watch15 oct 2026

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 v

CVSS

5.4

Medio

EPSS

0.3%

p19

KEV

—

Exploit Today

0-100

Publicado: 15 oct 2026 · Última mod.: 15 oct 2026 · CWE-79

EPSS · 30d

0.3%EPSS · 30 días0.3%

2026-10-162026-10-20

Descripción técnica

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.

Referencias oficiales

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