What is CVE-2024-8850?

CVE-2024-8850 is a medium-severity vulnerability in Dvankooten Mc4wp: Mailchimp For WordPress, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-09-19.

How severe is CVE-2024-8850?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2024-8850 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Dvankooten Mc4wp: Mailchimp For WordPress

CVE-2024-8850

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (37.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Dvankooten Mc4wp: Mailchimp For Wordpress — versions 4.9.9
Ibericode Mailchimp

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

security@wordfence.com (Third Party Advisory)
security@wordfence.com (Product)
security@wordfence.com (Patch)

Frequently asked questions

What is CVE-2024-8850?: CVE-2024-8850 is a medium-severity vulnerability in Dvankooten Mc4wp: Mailchimp For WordPress, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-09-19.
How severe is CVE-2024-8850?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2024-8850 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.