The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 10.8.2. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to modify privileged AcyMailing configuration, export subscriber secret keys, and chain these actions into administrator account takeover when a target administrator email address is known.
CVE-2026-5200 is a high severity with CVSS 8.8 Privilege Escalation issue affecting the Plugin AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress. It affects Versions up to 10.8.2 and is fixed in 10.9.0.
Use the related hub and response guides to connect this CVE-2026-5200 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2026-5200 is tracked for the Plugin AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress as high severity with CVSS 8.8. The affected range is Versions up to 10.8.2. Update AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress to 10.9.0 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with Versions up to 10.8.2.
Confirm AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress is updated to 10.9.0 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
acymailing
View on wordpress.org
|
| CVE | CVE-2026-5200 |
| Patched Versions |
10.9.0
|
| Affected Versions |
Versions up to 10.8.2
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
AcyMailing 9.11.0 - 10.8.1 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation
AcyMailing <= 9.7.2 - Authenticated (Subscriber+) Arbitrary File Upload via acym_extractArchive Function
AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress <= 9.11.0 - Reflected Cross-Site Scripting
AcyMailing SMTP Newsletter <= 8.6.2 - Reflected Cross-Site Scripting
AcyMailing SMTP Newsletter < 7.5.0 - Open Redirect
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