CVE-2026-49132OPNsense < 26.1.9 Stored XSS via Certificate Description Field
Updated under an hour ago ()
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It affects Deciso B.V. OPNsense. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Deciso B.V. OPNsense deciso:opnsense (from the name) | before 26.1.9 | CNA record |
References
- https://docs.opnsense.org/releases/CE_26.1.html#june-02-2026release-notes
- https://github.com/opnsense/core/commit/12b021ff11db38705e92ac4c9af5e07d602da6bapatch
- https://www.vulncheck.com/advisories/opnsense-stored-xss-via-certificate-description-fieldthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.