CVE-2021-34648

Ninja Forms <= 3.5.7 Unprotected REST-API to Email Injection

Published Sep 22, 2021 CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
Description
The Ninja Forms WordPress plugin is vulnerable to arbitrary email sending via the trigger_email_action function found in the ~/includes/Routes/Submissions.php file, in versions up to and including 3.5.7. This allows authenticated attackers to send arbitrary emails from the affected server via the /ninja-forms-submissions/email-action REST API which can be used to socially engineer victims.

Analysis

No analysis available yet

Remediation

Vendor Solution

Update to version 3.5.8 or newer.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-21298 The Ninja Forms WordPress plugin is vulnerable to arbitrary email sending via the trigger_email_action function found in the ~/includes/Routes/Submissions.php file, in versions up to and including 3.5.7. This allows authenticated attackers to send arbitrary emails from the affected server via the /ninja-forms-submissions/email-action REST API which can be used to socially engineer victims.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Ninja Forms <= 3.5.7 Unprotected REST-API to Email Injection Ninja Forms <= 3.5.7 Unprotected REST-API to Email Injection
Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
Mar 31, 2025, 6:20 PM
Reserved
Jun 10, 2021, 12:00 AM
Status
Modified
Published
Sep 22, 2021, 6:15 PM
Modified
Jun 17, 2026, 3:56 AM