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CVE-2024-8850

18
FAUCET Score

CVE-2024-8850 describes a Reflected Cross-Site Scripting (XSS) vulnerability in the MC4WP: Mailchimp for WordPress plugin, affecting versions 4.9.9 to 4.9.16. This flaw allows unauthenticated attackers to inject malicious web scripts through the 'email' parameter when a placeholder is used, due to inadequate input sanitization and output escaping. Rated 6.1 MEDIUM on the CVSS scale, exploitation requires user interaction (e.g., clicking a malicious link) and could lead to limited data compromise and integrity impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.9.9, <= 4.9.16CPE matchmatch criteria
cpe:2.3:a:ibericode:mailchimp:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.45%
Probability of exploitation in next 30 days
EPSS Percentile
36.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0045 is in the 39th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

plugins.trac.wordpress.org / browser/mailchimp-for-wp/tags/4.9.16/config/default-form-content.php
Product
plugins.trac.wordpress.org / changeset
Patch
wordfence.com / threat-intel/vulnerabilities/id/1d2ba8ea-a75f-4069-b67d-f832acb1deef
Third Party Advisory