CVE-2019-25376
OPNsense 19.1 Reflected XSS via proxy endpoint
MEDIUM 5.1EPSS 0.4%
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.
- Affected
- Opnsense · OPNsense
- CVSS v4.0 VULNCHECK
- 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/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 VULNCHECK
- 6.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - EPSS
- 0.42% chance of exploitation in the next 30 days, 35th percentile
- Published
- 2026-02-15
- Updated
- 2026-05-24
Proof-of-concept exploits (1)
Security advisories
- https://www.vulncheck.com/advisories/opnsense-reflected-xss-via-proxy-endpoint
- https://forum.opnsense.org/index.php?topic=11469.0
- https://opnsense.org