CVE-2026-86834CWE-200information-disclosure

CVE-2026-86834

Low · published October 3, 2026

CVSS v3.1
3.7
EPSS
0%
Percentile
7.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.7 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00178 · 7.0th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-10-03T10:16Z
References (1)
https://wpscan.com/vulnerability/a56b7e26-9070-4c38-bdc1-7289b5829638/ · [email protected]
EPSS history
Timeline
  • 04 OCT 03:31Z
    EPSS moved — → 0%
    epss
  • 03 OCT 06:00Z
    MetForm 2.2.1 - 4.3.0 - Unauthenticated Debug File Disclosure via HubSpot Forms Integration
    cvelistv5