CVE-2026-86834
Low
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.
SeverityLow
CVSS3.7
Exploit probability—
ProductMetForm
PublishedOct 3, 2026
First seenOct 3, 2026
Weakness typeCWE-200Sensitive information exposure
How to fix
Update
- MetForm4.3.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| MetForm | 2.2.1 ≤ v < 4.3.1 | 4.3.1 |
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