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CVE-2026-1781 MC4WP: Mailchimp for WordPress <= 4.11.1 - Missing Authorization to Unauthenticated Arbitrary Subscription Deletion

🗓️ 11 Mar 2026 01:22:03Reported by WordfenceType 
cvelist
 cvelist
🔗 www.cve.org👁 47 Views

The Mailchimp for WordPress plugin up to 4.11.1 allows unauthenticated unsubscribe via the _mc4wp_action parameter.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-1781
11 Mar 202601:22
–attackerkb
cnnvd
CNNVD
WordPress plugin MC4WP: Mailchimp for WordPress 安全漏洞
11 Mar 202600:00
–cnnvd
cve
CVE
CVE-2026-1781
11 Mar 202601:22
–cve
euvd
EUVD
EUVD-2026-11031
11 Mar 202601:22
–euvd
euvd
EUVD
EUVD-2026-11032
11 Mar 202603:31
–euvd
nvd
NVD
CVE-2026-1781
11 Mar 202602:16
–nvd
patchstack
Patchstack
WordPress MC4WP: Mailchimp for WordPress plugin <= 4.11.1 - Missing Authorization to Unauthenticated Arbitrary Subscription Deletion vulnerability
11 Mar 202609:59
–patchstack
ptsecurity
Positive Technologies
PT-2026-24546
11 Mar 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-1781: Missing Authorization
11 Mar 202600:00
–rapid7
redhatcve
RedhatCVE
CVE-2026-1781
26 Mar 202615:10
–redhatcve
Rows per page
[
  {
    "vendor": "dvankooten",
    "product": "MC4WP: Mailchimp for WordPress",
    "versions": [
      {
        "version": "0",
        "status": "affected",
        "lessThanOrEqual": "4.11.1",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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