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Vulnerability · Published Jul 9, 2026 · Assigned by Wordfence

CVE-2026-15000Connect Contact Form 7 and Mailchimp <= 0.9.78.06 - Unauthenticated Stored Cross-Site Scripting via Mailchimp Merge Field Values

High 7.2

In plain English

A high-severity cross-site scripting in Connect Contact Form 7 and Mailchimp from rnzo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High
Exploit odds (30 days)0.6%top 51.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

The Connect Contact Form 7 and Mailchimp plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Mailchimp Merge Field Values in all versions up to, and including, 0.9.78.06 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The injected payload is only triggered when a privileged user (Administrator) performs a Contact Lookup for the email address submitted via the CF7 form, meaning execution is deferred until an administrator interacts with the affected entry.

Affected products (as reported)

VendorProductVersions
rnzo Connect Contact Form 7 and Mailchimp 0 – through 0.9.78.06

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References