Description
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.
Exploits (1)
References (4)
Core 4
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/46351
Various Sources product
https://opnsense.org
Various Sources patch
https://forum.opnsense.org/index.php?topic=11469.0
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/opnsense-reflected-xss-via-proxy-endpoint
Scores
CVSS v3
6.1
EPSS
0.0003
EPSS Percentile
9.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (1)
opnsense/opnsense
19.1
Published
Feb 15, 2026
Tracked Since
Feb 18, 2026