What is CVE-2026-49132?

CVE-2026-49132 is a medium-severity vulnerability in Deciso B.v. Opnsense, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-08-03.

How severe is CVE-2026-49132?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Deciso B.v. Opnsense

CVE-2026-49132

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…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Deciso B.v. Opnsense — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (release-notes)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-49132?: CVE-2026-49132 is a medium-severity vulnerability in Deciso B.v. Opnsense, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-08-03.
How severe is CVE-2026-49132?: Medium severity. CVSS v3 base score is 5.4 out of 10.