Vulnerability-Lookup

GHSA-6333-CC9F-9589

Vulnerability from github – Published: 2026-02-15 15:31 – Updated: 2026-02-15 15:31

Details

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.

Severity ?

6.1 (Medium)


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

5.1 (Medium)


                  
                    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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2019-25375"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-15T14:16:07Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-6333-cc9f-9589",
  "modified": "2026-02-15T15:31:31Z",
  "published": "2026-02-15T15:31:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-25375"
    },
    {
      "type": "WEB",
      "url": "https://forum.opnsense.org/index.php?topic=11469.0"
    },
    {
      "type": "WEB",
      "url": "https://opnsense.org"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/46351"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/opnsense-reflected-xss-via-monit-interface"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2019-25375 (GCVE-0-2019-25375)

Vulnerability from cvelistv5 – Published: 2026-02-15 13:58 – Updated: 2026-02-17 16:52

Title

OPNsense 19.1 Reflected XSS via monit interface

Summary

Severity ?

5.1 (Medium)


                        
                          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

6.1 (Medium)


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

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

VulnCheck

References

URL

Tags

	https://www.exploit-db.com/exploits/46351	exploit
	https://opnsense.org	product
	https://forum.opnsense.org/index.php?topic=11469.0	patch
	https://www.vulncheck.com/advisories/opnsense-ref…	third-party-advisory

Impacted products

	Vendor	Product	Version
	Opnsense	OPNsense	Affected: 19.1

Credits

Ozer Goker

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2019-25375",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-17T16:52:25.057507Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
          "product": "OPNsense",
          "vendor": "Opnsense",
          "versions": [
            {
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            }
          ]
        }
      ],
      "cpeApplicability": [
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              "cpeMatch": [
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
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        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Ozer Goker"
        }
      ],
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      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "metrics": [
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          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
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            "baseSeverity": "MEDIUM",
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            "vulnAvailabilityImpact": "NONE",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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      },
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          "tags": [
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          ],
          "url": "https://www.exploit-db.com/exploits/46351"
        },
        {
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          "tags": [
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          ],
          "url": "https://opnsense.org"
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        },
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    "datePublished": "2026-02-15T13:58:56.731Z",
    "dateReserved": "2026-02-15T13:21:00.205Z",
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  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-6333-CC9F-9589

CVE-2019-25375 (GCVE-0-2019-25375)

Tags

Sightings

Nomenclature