TI-2024-08546 Aliases CVE-2024-9210 GHSA-5cxw-32vw-9x98

MC4WP: Mailchimp Top Bar <= 1.6.0 - Reflected Cross-Site Scripting

LOW 29CWE-79Published 2024-10-02 · Updated 2026-04-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
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 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The MC4WP: Mailchimp Top Bar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 1.6.0. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00386 32nd 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: Total

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 Top Bar	up to 1.6.0	—	No fix listed	CNA

MC4WP: Mailchimp Top Bar Vendordvankooten Affected up to 1.6.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:ibericode:mailchimp_top_bar::::::wordpress::*	before 1.6.1	Vulnerable	dvankooten

cpe:2.3:a:ibericode:mailchimp_top_bar:*:*:*:*:*:wordpress:*:* Versions before 1.6.1 Vulnerable ·dvankooten

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2024-9210
2026-10-03 Alias added: GHSA-5cxw-32vw-9x98

References

Advisory 1

https://www.wordfence.com/threat-intel/vulnerabilities/id/b45ba98f-4cd1-406a-8661-e19d5b4c3ba8?source=cve

Other 2

Sources

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