Incorrect authorization in OPNsense - #VU139364
Published: July 26, 2026
Vulnerability identifier: #VU139364
CSH Severity: Low
CVSS v4: 7.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to make persistent configuration changes.
The vulnerability exists due to incorrect authorization in API controllers using manual Config::save() paths when handling crafted API requests to affected endpoints. A remote user can send a crafted request to make persistent configuration changes.
Exploitation requires an authenticated account assigned the user-config-readonly deny privilege together with an affected page privilege.
Affected software
OPNsense
Remediation
Install security update from vendor's website.
OPNsense - update to 26.7.1