CVE-2019-25369

5.1 mediumEPSS 0.2%

Medium (5.1) in opnsense opnsense. EPSS 0.2% chance of exploitation in the next 30 days.

OPNsense 19.1 contains a stored cross-site scripting vulnerability in the system_advanced_sysctl.php endpoint that allows attackers to inject persistent malicious scripts via the tunable parameter. Attackers can submit POST requests with script payloads that are stored and executed in the context of authenticated user sessions when the page is viewed.

Severity

CVSS 4.0

5.1 medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

CVSS 3.1

5.4 medium

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 14% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-02-15
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

opnsense:opnsense

References

https://forum.opnsense.org/index.php?topic=11469.0
https://opnsense.org
https://www.exploit-db.com/exploits/46351
https://www.vulncheck.com/advisories/opnsense-stored-xss-via-systemadvancedsysctlphp

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