High 7.1Published Aug 13, 2026

CVE-2026-27536WordPress MailChimp Subscribe Forms plugin <= 4.3.3 - Cross Site Scripting (XSS) vulnerability

Updated under an hour ago (2026-10-19 08:30 UTC)

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It affects PluginOps MailChimp Subscribe Forms. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for PluginOps MailChimp Subscribe Forms

Exploited in the last 30 days

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

CVSS: 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Patchstack
NVD analysis: Deferred
Record last updated: Aug 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

PluginOps MailChimp Subscribe Forms pluginops:mailchimp_subscribe_forms (from the name)	from n/a through 4.3.3; fixed at 4.3.4	CNA record

References

https://patchstack.com/database/wordpress/plugin/mailchimp-subscribe-sm/vulnerability/wordpress-mailchimp-subscribe-forms-plugin-4-3-3-cross-site-scripting-xss-vulnerability?_s_id=cvevdb-entry

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.