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MetForm 2.2.1 - 4.3.0 - Unauthenticated Debug File Disclosure via HubSpot Forms Integration

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-86834

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-86834

MetForm

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "Unknown",
    "product": "MetForm",
    "versions": [
      {
        "status": "affected",
        "version": "2.2.1",
        "lessThan": "4.3.1",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-86834

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#8434 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement