CVE-2026-56063 Details
Description
Unauthenticated Broken Access Control in MailChimp Block <= 1.1.15 versions.
A broken access control vulnerability has been identified in the MailChimp Block WordPress plugin, affecting versions through 1.1.15. This vulnerability allows unauthenticated users to perform actions that require higher privileges, due to a lack of proper authorization checks.
Users of the MailChimp Block WordPress plugin should update to version 1.1.16 or later. Patchstack users can enable auto-update for vulnerable plugins.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 26, 2026CISA-ADP
Assessed Jun 26, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| MailChimp Block | <= 1.1.15 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 26, 2026 | CVE Modified | CISA-ADP |
| Jun 26, 2026 | New CVE Received | [email protected] |