Security
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CVE-2026-86833

MEDIUMCVSS 5.4
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Description

The MetForm WordPress plugin before 4.3.1 does not sanitize or escape submitted form-field values before inserting them into the HTML body of its email notifications, allowing unauthenticated attackers to inject arbitrary markup into the administrator and submitter notification emails the site sends.

Timeline
Published:October 7th, 2026 7:17 AM
Last modified:October 7th, 2026 2:52 PM
CVSS Scoring

CVSS v3: 5.4 (MEDIUM)

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Weaknesses (CWE)
CWE-74
References & Reports
Advisories, patches, and third-party reports

Source: NIST NVD · Data may lag official sources by up to one minute