CVE-2019-25376
OPNsense 19.1 Reflected XSS via proxy endpoint
- State
- Published
- Severity
- 5.1 Medium
- Published
- Feb 15, 2026
- Updated
- May 24, 2026
- Reserved
- Feb 15, 2026
Description
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted payloads through the ignoreLogACL parameter. Attackers can send POST requests to the proxy endpoint with JavaScript code in the ignoreLogACL parameter to execute arbitrary scripts in users' browsers.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 6.1 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
OPNsenseOpnsense |
|
References
- ExploitDB-46351exploit
- OPNsense Official Websiteproduct
- OPNsense 19.1.1 Release Announcementpatch
- VulnCheck Advisory: OPNsense 19.1 Reflected XSS via proxy endpointthird-party-advisory
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