CVE-2026-86834 (GCVE-0-2026-86834)

Vulnerability from cvelistv5 – Published: 2026-10-03 06:00 – Updated: 2026-10-03 06:00
VLAI
Title
MetForm 2.2.1 - 4.3.0 - Unauthenticated Debug File Disclosure via HubSpot Forms Integration
Summary
The MetForm WordPress plugin before 4.3.1 does not properly restrict access to a debug file it writes to the web root on every form submission when its HubSpot Forms integration is enabled, allowing unauthenticated attackers to read upstream API response data, including correlation identifiers and cookies.
Severity
No CVSS data available.
References
URL Tags
https://wpscan.com/vulnerability/a56b7e26-9070-4c… exploitvdb-entrytechnical-description
Impacted products
Vendor Product Version CPE status
Unknown MetForm Affected: 2.2.1 , < 4.3.1 (semver)
guessed Create a notification for this product.
Show details on NVD website

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          "product": "MetForm",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "4.3.1",
              "status": "affected",
              "version": "2.2.1",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "vuxvinh"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "WPScan"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The MetForm  WordPress plugin before 4.3.1 does not properly restrict access to a debug file it writes to the web root on every form submission when its HubSpot Forms integration is enabled, allowing unauthenticated attackers to read upstream API response data, including correlation identifiers and cookies."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-200 Information Exposure",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-03T06:00:26.480Z",
        "orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
        "shortName": "WPScan"
      },
      "references": [
        {
          "tags": [
            "exploit",
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://wpscan.com/vulnerability/a56b7e26-9070-4c38-bdc1-7289b5829638/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "MetForm 2.2.1 - 4.3.0 - Unauthenticated Debug File Disclosure via HubSpot Forms Integration",
      "x_generator": {
        "engine": "WPScan CVE Generator"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
    "assignerShortName": "WPScan",
    "cveId": "CVE-2026-86834",
    "datePublished": "2026-10-03T06:00:26.480Z",
    "dateReserved": "2026-09-08T14:33:20.926Z",
    "dateUpdated": "2026-10-03T06:00:26.480Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-86834",
      "date": "2026-10-03",
      "epss": "0.00145",
      "percentile": "0.03248"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "MetForm",
                "vendor": "Unknown",
                "versions": [
                  {
                    "lessThan": "4.3.1",
                    "status": "affected",
                    "version": "2.2.1",
                    "versionType": "semver"
                  }
                ]
              }
            ],
            "source": "contact@wpscan.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "The MetForm  WordPress plugin before 4.3.1 does not properly restrict access to a debug file it writes to the web root on every form submission when its HubSpot Forms integration is enabled, allowing unauthenticated attackers to read upstream API response data, including correlation identifiers and cookies."
          }
        ],
        "id": "CVE-2026-86834",
        "lastModified": "2026-10-03T06:16:44.013",
        "metrics": {},
        "published": "2026-10-03T06:16:44.013",
        "references": [
          {
            "source": "contact@wpscan.com",
            "url": "https://wpscan.com/vulnerability/a56b7e26-9070-4c38-bdc1-7289b5829638/"
          }
        ],
        "sourceIdentifier": "contact@wpscan.com",
        "vulnStatus": "Received"
      }
    }
  }
}



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