Description
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.
References (5)
Core 5
Scores
CVSS v3
4.4
EPSS
0.0027
EPSS Percentile
50.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-80
CWE-79
Status
published
Products (2)
dvankooten/MC4WP: Mailchimp for WordPress
< 4.9.16
ibericode/mailchimp
< 4.9.17
Published
Sep 21, 2024
Tracked Since
Feb 18, 2026