What is CVE-2026-56063?

CVE-2026-56063 is a high-severity vulnerability in Bplugins Mailchimp Block, classified under Missing Authorization. CVSS score: 8.3/10. Published 2026-06-26.

How severe is CVE-2026-56063?

High severity. CVSS v3 base score is 8.3 out of 10.

Auth bypass in Bplugins Mailchimp Block

CVE-2026-56063

Unauthenticated Broken Access Control in MailChimp Block <= 1.1.15 versions.

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L.

Affected products

Bplugins Mailchimp Block — versions n/a

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2026-56063?: CVE-2026-56063 is a high-severity vulnerability in Bplugins Mailchimp Block, classified under Missing Authorization. CVSS score: 8.3/10. Published 2026-06-26.
How severe is CVE-2026-56063?: High severity. CVSS v3 base score is 8.3 out of 10.