CVE-2026-27536: WordPress MailChimp Subscribe Forms plugin <= 4.3.3 - Cross Site Scripting (XSS) vulnerability
Published Aug 13, 2026
·Updated
Unauthenticated Cross Site Scripting (XSS) in MailChimp Subscribe Forms <= 4.3.3 versions.
Affected Software
1 affected component
wordpress/MailChimp Subscribe Forms<=4.3.3
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
WordPress MailChimp Subscribe Forms pluginto a version that resolves this vulnerability.Fixed in 4.3.4
Event History
Aug 13, 2026
CVE Published
via MITRE·01:36 PM
Data Sourced
via MITRE·01:36 PM
RemedyDescriptionSeverityWeakness
Frequently Asked Questions
1
What is the severity of CVE-2026-27536?
CVE-2026-27536 has a severity rating of high, scoring 7.1 on the CVSS scale.
2
How do I fix CVE-2026-27536?
To fix CVE-2026-27536, update the MailChimp Subscribe Forms plugin to version 4.3.4 or later.
3
What type of vulnerability is CVE-2026-27536?
CVE-2026-27536 is a Cross Site Scripting (XSS) vulnerability.
4
Is authentication required to exploit CVE-2026-27536?
No, CVE-2026-27536 can be exploited without authentication.
5
What versions of MailChimp Subscribe Forms are affected by CVE-2026-27536?
MailChimp Subscribe Forms versions 4.3.3 and earlier are affected by CVE-2026-27536.