Multiple Cross-Site Scripting Vulnerabilities in OPNsense Firewall by Deciso
CVE-2026-115425

5.6MEDIUM

Key Information:

Vendor

Opnsense

Status
Opnsense Firewall
Vendor
CVE Published:
26 October 2026

What is CVE-2026-115425?

Multiple cross-site scripting (XSS) vulnerabilities in OPNsense Firewall allow unauthorized users with low privileges to inject JavaScript code. This can be exploited when a victim visits a maliciously crafted page or clicks on a specially designed link, leading to potential disclosure of sensitive information or session hijacking.

Affected Version(s)

OPNsense firewall Linux 0 <= 26.7.1_1

OPNsense firewall Linux 26.7.7

References

https://digitalcanion.com/security-research/#ghsa-9h93-hh...
third-party-advisory
https://github.com/opnsense/core/security/advisories/GHSA...
vendor-advisory

CVSS V4

Score:
5.6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Brian Mariani - DigitalCanion SA
.