TI-2024-08051 Aliases CVE-2024-8680 GHSA-j2wp-jm3g-6f93

MailChimp for Wordpress <= 4.9.16 - Authenticated (Administrator+) Stored Cross-Site Scripting

LOW 25CWE-80Published 2024-09-21 · Updated 2026-04-08

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-80.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00529 45th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
dvankooten	MC4WP: Mailchimp for WordPress	up to 4.9.16	—	No fix listed	CNA

MC4WP: Mailchimp for WordPress Vendordvankooten Affected up to 4.9.16 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:ibericode:mailchimp::::::wordpress::*	before 4.9.17	Vulnerable	dvankooten

cpe:2.3:a:ibericode:mailchimp:*:*:*:*:*:wordpress:*:* Versions before 4.9.17 Vulnerable ·dvankooten

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2024-8680
2026-10-03 Alias added: GHSA-j2wp-jm3g-6f93

References

Patch 2

Advisory 1

https://www.wordfence.com/threat-intel/vulnerabilities/id/aa464547-0380-4b91-a5ea-0cd9a66da7a7?source=cve

Other 2

TI-2024-08216 MC4WP: Mailchimp for WordPress 4.9.9 - 4.9.16 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
TI-2023-15799 WordPress MailChimp Subscribe Forms Plugin <= 4.0.9.3 is vulnerable to Open Redirection CVSS 3.1MEDIUM 6.1
TI-2023-28329 WordPress MC4WP plugin <= 4.9.9 - Broken Access Control vulnerability CVSS 3.1MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences