Stored cross-site scripting in MailChimp Forms by Optin Cat – Grow Your MailChimp List plugin for WordPress

1) Stored cross-site scripting

EUVDB-ID: #VU98787

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-2024-7489

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 the form color parameter. A remote user can 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

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

MailChimp Forms by Optin Cat - Grow Your MailChimp List: 1.0 - 2.5.6

CPE2.3

• cpe:2.3:a:davidhme:mailchimp-wp:1.0:*:*:*:*:wordpress:*:*
• cpe:2.3:a:davidhme:mailchimp-wp:1.0.1:*:*:*:*:wordpress:*:*
• cpe:2.3:a:davidhme:mailchimp-wp:1.0.2:*:*:*:*:wordpress:*:*

External links

https://www.wordfence.com/threat-intel/vulnerabilities/id/52f9db86-7fed-4b32-8384-3ceb300f9249?source=cve
https://plugins.trac.wordpress.org/browser/mailchimp-wp/trunk/includes/eoi-functions.php#L91
https://plugins.trac.wordpress.org/browser/mailchimp-wp/trunk/includes/eoi-functions.php#L166

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.