OPNsense 19.1 Reflected XSS via system_advanced_sysctl.php

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2019-25377",
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "dateUpdated": "2026-02-15T13:58:58.193Z",
    "dateReserved": "2026-02-15T13:24:15.625Z",
    "datePublished": "2026-02-15T13:58:58.193Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck",
        "dateUpdated": "2026-02-15T13:58:58.193Z"
      },
      "datePublic": "2019-02-01T00:00:00.000Z",
      "title": "OPNsense 19.1 Reflected XSS via system_advanced_sysctl.php",
      "descriptions": [
        {
          "lang": "en",
          "value": "OPNsense 19.1 contains a reflected cross-site scripting vulnerability in the system_advanced_sysctl.php endpoint that allows attackers to inject malicious scripts via the value parameter. Attackers can craft POST requests with script payloads in the value parameter to execute JavaScript in the context of authenticated user sessions."
        }
      ],
      "affected": [
        {
          "vendor": "Opnsense",
          "product": "OPNsense",
          "versions": [
            {
              "version": "19.1",
              "status": "affected"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
              "cweId": "CWE-79",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://www.exploit-db.com/exploits/46351",
          "name": "ExploitDB-46351",
          "tags": [
            "exploit"
          ]
        },
        {
          "url": "https://opnsense.org",
          "name": "OPNsense Official Website",
          "tags": [
            "product"
          ]
        },
        {
          "url": "https://forum.opnsense.org/index.php?topic=11469.0",
          "name": "OPNsense 19.1.1 Release Announcement",
          "tags": [
            "patch"
          ]
        },
        {
          "url": "https://www.vulncheck.com/advisories/opnsense-reflected-xss-via-systemadvancedsysctlphp",
          "name": "VulnCheck Advisory: OPNsense 19.1 Reflected XSS via system_advanced_sysctl.php",
          "tags": [
            "third-party-advisory"
          ]
        }
      ],
      "metrics": [
        {
          "format": "CVSS"
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
            "attackVector": "NETWORK",
            "attackComplexity": "LOW",
            "privilegesRequired": "LOW",
            "userInteraction": "REQUIRED",
            "scope": "CHANGED",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM"
          }
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "OPNsense 19.1.1 released"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Ozer Goker",
          "type": "finder"
        }
      ]
    }
  }
}