Medium severity · published Apr 5, 2021
CVE-2021-24164
In the Ninja Forms Contact Form WordPress plugin before 3.4.34.1, low-level users, such as subscribers, were able to trigger the action, wp_ajax_nf_oauth, and retrieve the…
4.3
CVSS
0.9%
EPSS
No
On KEV
Description
In the Ninja Forms Contact Form WordPress plugin before 3.4.34.1, low-level users, such as subscribers, were able to trigger the action, wp_ajax_nf_oauth, and retrieve the connection url needed to establish a connection. They could also retrieve the client_id for an already established OAuth connection.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 59% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NF
Ninja Forms · Ninjaforms
before 3.4.34.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-24164
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-24164
Exploit
https://wpscan.com/vulnerability/dfa32afa-c6de-4237-a9f2-709843dcda89
Third Party Advisory
https://www.wordfence.com/blog/2021/02/one-million-sites-affected-four-severe-vulnerabilities-patched-in-ninja-forms/
More from Ninja Forms
9.8
CVE-2025-9083
Ninja-forms < 3.11.1 - Unauthenticated PHP Objection
9.8
CVE-2024-37934
WordPress Ninja Forms plugin <= 3.8.4 - Subscriber+ Arbitrary Shortcode Execution vulnerability
9.8
CVE-2023-38386
WordPress Ninja Forms plugin <= 3.6.25 - Contributor+ Broken Access Control vulnerability
9.8
CVE-2024-0685
Ninja Forms Contact Form <= 3.7.1 - Unauthenticated Second Order SQL Injection
9.8
CVE-2016-1209
The Ninja Forms plugin before 2.9.42.1 for WordPress allows remote attackers to conduct PHP object injection attacks via crafted serialized values in a POST request