CVE Catalog

CVE-2026-27536

HighCVSS 7.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.25%

16th percentile - higher than 16% of all known CVEs

Summary

Unauthenticated Cross Site Scripting (XSS) in MailChimp Subscribe Forms versions up to 4.3.3. An attacker can inject malicious script without authentication.

Risk Assessment

Risk of session hijacking, admin account takeover, or malware distribution on the site.

Recommendation

Update the MailChimp Subscribe Forms plugin to the latest version that includes the security fix.

Related vulnerabilities

Original NVD description (English source)

Unauthenticated Cross Site Scripting (XSS) in MailChimp Subscribe Forms <= 4.3.3 versions.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS