Reflected Cross-Site Scripting Vulnerability in OPNsense by Deciso
CVE-2019-25372

5.1MEDIUM

Key Information:

Vendor

Opnsense

Status
Opnsense
Vendor
CVE Published:
15 February 2026

Badges

👾 Exploit Exists

What is CVE-2019-25372?

OPNsense 19.1 is vulnerable to a reflected cross-site scripting attack due to insufficient input validation in the host parameter. This vulnerability enables unauthenticated attackers to craft specific POST requests to the 'diag_traceroute.php' interface, allowing them to execute arbitrary JavaScript within the user’s browser session. As a result, the attacker can potentially steal sensitive information or manipulate user interactions.

Affected Version(s)

OPNsense 19.1

References

https://www.exploit-db.com/exploits/46351
exploit
https://opnsense.org
product
https://forum.opnsense.org/index.php?topic=11469.0
patch

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ozer Goker
.