CVE-2024-8680: mailchimp XSS — Fix

Description

The MC4WP: Mailchimp for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 4.9.16 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

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CVSS v3.1 Score

4.4

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-80 CWE-80

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
ibericode	mailchimp	< 4.9.17

References

Advisories & Patches

https://github.com/ibericode/mailchimp-for-wordpress/commit/60c6bfc260a7974f791af1d4ad4a032a3e0bdd3c https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3153075%40mailchimp-for-wp%2Ftrunk&old=3149806%40mailchimp-for-wp%2Ftrunk&sfp_email=&sfph_mail=

Other References

https://github.com/ibericode/mailchimp-for-wordpress/blob/main/includes/views/parts/lists-overview-details.php https://plugins.trac.wordpress.org/browser/mailchimp-for-wp/trunk/includes/views/parts/lists-overview-details.php https://www.wordfence.com/threat-intel/vulnerabilities/id/aa464547-0380-4b91-a5ea-0cd9a66da7a7?source=cve

Frequently Asked Questions

What is CVE-2024-8680? +

The MC4WP: Mailchimp for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 4.9.16 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled. It has a CVSS v3.1 base score of 4.4 (MEDIUM).

How severe is CVE-2024-8680? +

CVE-2024-8680 has a CVSS v3.1 score of 4.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-8680? +

CVE-2024-8680 affects products from ibericode, specifically: mailchimp. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-8680? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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