CVE-2026-27356

MEDIUM 5.3

WordPress MC4WP plugin <= 4.14.1 - Broken Access Control vulnerability

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

Missing Authorization vulnerability in ibericode MC4WP mailchimp-for-wp allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects MC4WP: from n/a through 4.14.1.

CWE	CWE-862
Vendor	ibericode
Product	mc4wp
Published	Nov 6, 2026
Last Updated	Nov 7, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

ibericode / MC4WP

0 ≤ 4.14.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/wordpress/plugin/mailchimp-for-wp/vulnerability/wordpress-mc4wp-plugin-4-14-1-broken-access-control-vulnerability?_s_id=cve

Credits

Harry Nguyen | Patchstack Bug Bounty Program