Vulnerability · Published Oct 3, 2026 · Assigned by WPScan

CVE-2026-86834MetForm 2.2.1 - 4.3.0 - Unauthenticated Debug File Disclosure via HubSpot Forms Integration

Low 3.7

In plain English

A low-severity information exposure in MetForm from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).

Severity (CVSS 3.1)3.7Low

Exploit odds (30 days)0.2%top 92.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Unknown	MetForm	2.2.1 – before 4.3.1

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

References

https://wpscan.com/vulnerability/a56b7e26-9070-4c38-bdc1-7289b5829638/ exploit, vdb-entry, technical-description