Vulnerability CVE-2021-34648
Published: 2021-09-22

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.

Type:

CWE-863

 (Incorrect Authorization)

CVSS2 => (AV:N/AC:L/Au:S/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4/10
2.9/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Ninjaforms -> Ninja forms 

 References:
https://www.wordfence.com/blog/2021/09/recently-patched-vulnerabilities-in-ninja-forms-plugin-affects-over-1-million-site-owners/
https://plugins.trac.wordpress.org/browser/ninja-forms/trunk/includes/Routes/Submissions.php?rev=2543837#L155
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