CVE-2026-49132

Description

OPNsense before 26.1.9 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject arbitrary HTML or JavaScript by embedding payloads in the certificate description field via the trust certificate API. The unsanitized description value is persisted and later rendered in the Dashboard Certificates widget through Certificates.js, which interpolates the raw value into HTML attribute and text content sinks without encoding, causing injected scripts to execute in the browser of any authenticated user who views the Dashboard, enabling session hijacking or credential theft.

References

https://www.vulncheck.com/advisories/opnsense-stored-xss-via-certificate-description-field

https://github.com/opnsense/core/commit/12b021ff11db38705e92ac4c9af5e07d602da6ba

https://docs.opnsense.org/releases/CE_26.1.html#june-02-2026

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS