CVE-2024-8850

MEDIUM

MC4WP: Mailchimp for WordPress 4.9.9-4.9.16 - Unauthenticated Reflected Cross-Site Scripting via Email Parameter

Title source: llm

Description

The MC4WP: Mailchimp for WordPress plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'email' parameter when a placeholder such as {email} is used for the field in versions 4.9.9 to 4.9.16 due to insufficient input sanitization and output escaping. 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.

References (3)

Core 3

Core References

Product

https://plugins.trac.wordpress.org/browser/mailchimp-for-wp/tags/4.9.16/config/default-form-content.php#L8

Patch

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3153075%40mailchimp-for-wp&new=3153075%40mailchimp-for-wp&sfp_email=&sfph_mail=

Third Party Advisory

https://www.wordfence.com/threat-intel/vulnerabilities/id/1d2ba8ea-a75f-4069-b67d-f832acb1deef?source=cve

Scores

CVSS v3 6.1

EPSS 0.0045

EPSS Percentile 36.5%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (1)

ibericode/mailchimp 4.9.9 - 4.9.16

Published Sep 19, 2024

Tracked Since Feb 18, 2026