CVE-2026-58392

mediumpriority · track · 0EPSS 0.003 · 20 %ileDE

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.27% (20th) EPSS

CVSS 5.4 · medium

Is it mine?

2 products

Check your exposure

Who says so?

1 sources

cert_bund

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

5.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nsecondary · security-advisories@github.comexploitability 2.3 · impact 2.7

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: no · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimary

affected products (2)

Products and version ranges known to be affected.

Open Source OPNsense< 26.1.11cert_bundDE
Open Source Open Source OPNsense <26.1.11< 26.1.11cert_bundDE

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2177OPNsense: Mehrere SchwachstellenDeutsch2026-07-01csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in OPNsense ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen, um Sicherheitsvorkehrungen zu umgehen, um einen Cross-Site Scripting Angriff durchzuführen, um Dateien zu manipulieren, um Informationen offenzulegen, und um einen Denial of Service Angriff durchzuführen.

sources

Which sources assert this record, and when.

cert_bund NVD CVE.org MITRE

published 2026-10-15modified 2026-10-15

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+53008 more

references (4) nvd

External citations — patches, advisories, analysis.

scry

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