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CVE-2019-25373

OPNsense 19.1 Stored XSS via firewall_rules_edit.php

Published: Feb 15, 2026Updated: Feb 18, 2026 Sources: CVE List NVDCWE-79
6.4MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 90.2%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

OPNsense 19.1 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by submitting crafted input to the category parameter. Attackers can send POST requests to firewall_rules_edit.php with script payloads in the category field to execute arbitrary JavaScript in the browsers of other users accessing firewall rule pages.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

OPNsenseOpnsense
On-prem
Networking Infrastructure / firewall
opnsenseopnsense
On-prem
Networking Infrastructure / firewall
opnsenseoss-projectNetworking Infrastructure

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
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References

https://www.exploit-db.com/exploits/46351
exploit-db.com
https://opnsense.org
opnsense.org
https://forum.opnsense.org/index.php?topic=11469.0
forum.opnsense.org
and 1 more references View all →

Timeline

Published
Feb 15, 2026
Last Updated
Feb 18, 2026

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