FKIE_CVE-2019-25375

Vulnerability from fkie_nvd - Published: 2026-02-15 14:16 - Updated: 2026-02-18 19:11
Severity ?
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
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.
References
disclosure@vulncheck.comhttps://forum.opnsense.org/index.php?topic=11469.0Release Notes
disclosure@vulncheck.comhttps://opnsense.orgProduct
disclosure@vulncheck.comhttps://www.exploit-db.com/exploits/46351Exploit, Third Party Advisory, VDB Entry
disclosure@vulncheck.comhttps://www.vulncheck.com/advisories/opnsense-reflected-xss-via-monit-interfaceThird Party Advisory
Impacted products
Vendor Product Version
opnsense opnsense 19.1
To clipboard 

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      "nodes": [
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          "cpeMatch": [
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              "criteria": "cpe:2.3:a:opnsense:opnsense:19.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "CF389871-A367-4087-A638-108C36E5B805",
              "vulnerable": true
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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\u0027 browsers."
    },
    {
      "lang": "es",
      "value": "OPNsense 19.1 contiene una vulnerabilidad de cross-site scripting reflejado que permite a atacantes no autenticados inyectar scripts maliciosos al enviar una entrada manipulada al par\u00e1metro mailserver. Los atacantes pueden enviar solicitudes POST a la interfaz monit con cargas \u00fatiles de JavaScript en el par\u00e1metro mailserver para ejecutar c\u00f3digo arbitrario en los navegadores de los usuarios."
    }
  ],
  "id": "CVE-2019-25375",
  "lastModified": "2026-02-18T19:11:03.210",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
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    "cvssMetricV40": [
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          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
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          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
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          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "ACTIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
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        "type": "Secondary"
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  "published": "2026-02-15T14:16:07.417",
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      "tags": [
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      "url": "https://forum.opnsense.org/index.php?topic=11469.0"
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      "tags": [
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      "url": "https://opnsense.org"
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      "source": "disclosure@vulncheck.com",
      "tags": [
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      "url": "https://www.exploit-db.com/exploits/46351"
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  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "value": "CWE-79"
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}


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