[ CVE-2026-86834 · Published 3 Oct 2026 ]
Vulnerability in Unknown MetForm
CVSS 3.7
EPSS <1%No fix listed yet
[ Description ]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.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.