Medium severity6.1NVD Advisory· Published Feb 15, 2026· Updated Jun 17, 2026

CVE-2019-25375

Description

OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted input to the mailserver parameter. Attackers can send POST requests to the monit interface with JavaScript payloads in the mailserver parameter to execute arbitrary code in users' browsers.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Opnsense/Opnsense3 versions
cpe:2.3:a:opnsense:opnsense:19.1:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:opnsense:opnsense:19.1:*:*:*:*:*:*:*
- (no CPE)range: 19.1
- (no CPE)range: 19.1

Patches

Vulnerability mechanics

References

www.exploit-db.com/exploits/46351nvdExploitThird Party AdvisoryVDB Entry
www.vulncheck.com/advisories/opnsense-reflected-xss-via-monit-interfacenvdThird Party Advisory
forum.opnsense.org/index.phpnvdRelease Notes
opnsense.orgnvdProduct

News mentions

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