Auth bypass in Ninjaforms Ninja Forms
CVE-2021-24163
The AJAX action, wp_ajax_ninja_forms_sendwp_remote_install_handler, did not have a capability check on it, nor did it have any nonce protection, therefore making it possible for low-level users, such as subscribers, to install and activate the SendWP Ninja Forms Contact Form – The Drag and Drop Form Builder for WordPress WordPress plugin before 3.4.34 and retrieve the client_secret key needed to establish the SendWP connection while also installing the SendWP plugin.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.014 (73.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
- Ninjaforms Ninja Forms
- Ninja Forms Contact Form – The Drag And Drop Builder For WordPress — versions 3.4.34
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wpscan.com/vulnerability/55fde9fa-f6cd-4546-bee8-4acc628251c2 (Exploit, Third Party Advisory)
- www.wordfence.com/blog/2021/02/one-million-sites-affected-four-severe-vulnerabi… (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-24163?
- CVE-2021-24163 is a high-severity vulnerability in Ninjaforms Ninja Forms, classified under Information Disclosure. CVSS score: 8.8/10. Published 2021-04-05.
- How severe is CVE-2021-24163?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-24163 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.