CVE-2019-25373
Stored XSS in OPNsense firewall_rules_edit.php Allows Script Injection
Publication date: 2026-02-15
Last updated on: 2026-02-18
Assigner: VulnCheck
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| opnsense | opnsense | 19.1 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a stored cross-site scripting (XSS) issue in OPNsense 19.1. It allows authenticated attackers to inject malicious JavaScript code by submitting specially crafted input to the 'category' parameter. Specifically, attackers can send POST requests to the firewall_rules_edit.php page with script payloads in the category field. When other users access the firewall rule pages, the injected scripts execute in their browsers.
How can this vulnerability impact me? :
This vulnerability can impact users by enabling attackers to execute arbitrary JavaScript in the browsers of other users who access the affected firewall rule pages. This can lead to unauthorized actions performed on behalf of those users, theft of sensitive information such as session tokens, or other malicious activities that compromise user security and privacy.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know