PT-2021-20616 · WordPress · Ninja Forms

Chloe Chamberland · Published 2021-09-22 · Updated 2022-10-27 · CVE-2021-34648

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: Ninja Forms WordPress plugin versions up to and including 3.5.7

Description: The issue allows authenticated attackers to send arbitrary emails from the affected server via the "/ninja-forms-submissions/email-action" REST API endpoint, utilizing the trigger email action function found in the ~/includes/Routes/Submissions.php file. This can be used to socially engineer victims.

Recommendations: For versions up to and including 3.5.7, update to a version later than 3.5.7 to resolve the issue. As a temporary workaround, consider disabling the trigger email action function until a patch is available. Restrict access to the "/ninja-forms-submissions/email-action" REST API endpoint to minimize the risk of exploitation.

Exploit

Fix

Incorrect Authorization

Missing Authorization

Weakness Enumeration

CWE-863

CWE-862

Related Identifiers

CVE-2021-34648

Affected Products

Ninja Forms

References · 6

• 🔥 https://wordfence.com/blog/2021/09/recently-patched-vulnerabilities-in-ninja-forms-plugin-affects-over-1-million-site-owners · Exploit
• https://osv.dev/vulnerability/CVE-2021-34648 · Vendor Advisory
• https://plugins.trac.wordpress.org/browser/ninja-forms/trunk/includes/Routes/Submissions.php?rev=2543837#L155 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-34648 · Security Note
• https://t.me/cvenotify/21657 · Telegram Post
• https://t.me/cibsecurity/29248 · Telegram Post