Stored cross-site scripting in Ninja Forms Contact Form – The Drag and Drop Form Builder for WordPress

1) Stored cross-site scripting

EUVDB-ID: #VU25384

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-8594

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in "recaptcha_site_key", "recaptcha_secret_key", "recaptcha_lang" and "date_format" keys. A remote authenticated attacker can permanently inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Ninja Forms - The Easy and Powerful Forms Builder: 3.4.22

CPE2.3

• cpe:2.3:a:kstover:ninja-forms:3.4.22:*:*:*:*:wordpress:*:*

External links

https://spider-security.co.uk/blog-cve-cve-2020-8594
https://wordpress.org/plugins/ninja-forms/#developers
https://wpvulndb.com/vulnerabilities/10070

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.