CVE-2026-56063
WordPress MailChimp Block plugin <= 1.1.15 - Broken Access Control vulnerability
Unauthenticated Broken Access Control in MailChimp Block <= 1.1.15 versions.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
WordPress MailChimp Block plugin <= 1.1.15 - Broken Access Control vulnerability
Unauthenticated Broken Access Control in MailChimp Block <= 1.1.15 versions.
- Record
CVE-2026-56063- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-862
- Updated
- 2026-11-02
EUVDEUVD-2026-39717
Unauthenticated Broken Access Control in MailChimp Block <= 1.1.15 versions.
- Record
EUVD-2026-39717- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-h75p-rhw9-w8q8
Unauthenticated Broken Access Control in MailChimp Block <= 1.1.15 versions.
Unauthenticated Broken Access Control in MailChimp Block <= 1.1.15 versions.
- Record
GHSA-h75p-rhw9-w8q8- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-862
- Updated
- 2026-11-02
NVD
Unauthenticated Broken Access Control in MailChimp Block <= 1.1.15 versions.
- Record
CVE-2026-56063- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-862
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-56063 is a high vulnerability (CVSS 8.3) in Bplugins Mailchimp Block, published June 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 22nd percentile. No source names a fixed version.