Block for Mailchimp – grow your email list with signup forms vulnerabilities
Plugin slug block-for-mailchimp · 2 known vulnerabilities · latest disclosed 2026-06-25 · WordPress.org page
Every listed vulnerability has a fix. Version 1.1.16 or later is not affected by any of them. If your site runs an older version, update it.
0 of 2 rated high or critical (CVSS 7 or more).
Known vulnerabilities in Block for Mailchimp – grow your email list with signup forms
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| Medium 5.3 | <= 1.1.15 | 1.1.16 | CVE-2026-56063 | 2026-06-25 | Advisory |
| Medium 4 | <= 1.1.12 | 1.1.13 | CVE-2025-10735 | 2025-09-30 | Advisory |
Check if a site is affected
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Questions
Is the Block for Mailchimp – grow your email list with signup forms plugin safe to use?
All 2 known issues are fixed in current versions (1.1.16 or later). Keeping it updated is what matters.
How do I check which version of Block for Mailchimp – grow your email list with signup forms my site runs?
In WordPress go to Plugins > Installed Plugins. From the outside, the free PluginPeek scan below reads the version from the site's public files.
How do I fix a vulnerable plugin?
Make a full backup, then update it from Dashboard > Updates and check the site afterwards. If you would rather not, we can do it for a fixed $99, paid after you have checked the site.