CVE-2019-25376

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.

CVSS v4.0

5.1 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.36% chance of exploitation in the next 30 days, 29th percentile

Published

2026-02-15

Updated

2026-05-24

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/46351

References

• CVE Record
• NVD entry

Related

• CVE-2019-25375
• CVE-2019-25377
• CVE-2019-25374
• CVE-2019-25378
• CVE-2019-25373
• CVE-2019-25379