Vulnerability-Lookup

GHSA-MH66-GFV9-X2XC

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

Details

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

6.4 (Medium)


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

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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2019-25369"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-15T14:16:06Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-mh66-gfv9-x2xc",
  "modified": "2026-02-15T15:31:31Z",
  "published": "2026-02-15T15:31:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-25369"
    },
    {
      "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-stored-xss-via-systemadvancedsysctlphp"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "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/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-2019-25369 (GCVE-0-2019-25369)

Vulnerability from cvelistv5 – Published: 2026-02-15 13:58 – Updated: 2026-03-05 01:26

Title

OPNsense 19.1 Stored XSS via system_advanced_sysctl.php

Summary

Severity

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

6.4 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

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

Assigner

VulnCheck

References

4 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-sto…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Opnsense	OPNsense	Affected: 19.1

Date Public

2019-02-01 00:00

Credits

Ozer Goker

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2019-25369",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-17T17:24:28.339349Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-17T17:24:37.345Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "OPNsense",
          "vendor": "Opnsense",
          "versions": [
            {
              "status": "affected",
              "version": "19.1"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:opnsense:opnsense:*:*:*:*:*:*:*:*",
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                }
              ],
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              "operator": "OR"
            }
          ],
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        }
      ],
      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "Ozer Goker"
        }
      ],
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      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
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            "baseSeverity": "MEDIUM",
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            "providerUrgency": "NOT_DEFINED",
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            "subConfidentialityImpact": "LOW",
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            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
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            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
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            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
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        {
          "name": "ExploitDB-46351",
          "tags": [
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        },
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          "tags": [
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        },
        {
          "name": "OPNsense 19.1.1 Release Announcement",
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    "datePublished": "2026-02-15T13:58:52.074Z",
    "dateReserved": "2026-02-15T13:19:47.575Z",
    "dateUpdated": "2026-03-05T01:26:17.131Z",
    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date	Other

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-MH66-GFV9-X2XC

CVE-2019-25369 (GCVE-0-2019-25369)

Tags

Sightings

Nomenclature