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CVE-2026-5200 - AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress

CVE-2026-5200

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

HIGH CVSS 8.8 Published 2026-05-20 Updated 2026-05-20
AI Risk Critical (92/100) Active Exploit: No strong signal Published Exploit: No public exploit references Priority: P1 Immediate
Severity Band HIGH
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Components 5
Reference Links 2
AI Risk Engine Critical (92/100)
Exploitability Very High
Active Exploitation No strong signal
Published Exploit Status No public exploit references

Threat Timeline

  1. 2026-05-20 CVE published and first recorded in the threat feed.
  2. 2026-05-20 Record updated with latest vulnerability metadata.
  3. 2026-05-23 AI technical context refreshed for mitigation and impact guidance.
  4. Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated 5 hours ago

AI enriched 5 hours ago (2026-05-23 15:47 UTC)

Technical Summary

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…

Potential Impact

Severity is HIGH (CVSS 8.8). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as Very High based on remote code execution potential, low-bar exploit prerequisites.

Primary risk drivers: remote code execution potential, low-bar exploit prerequisites

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

AI risk score 92/100 (Critical, Very High) with priority P1 Immediate. Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress PLUGIN · acymailing-an-ultimate-newsletter-plugin-and-marketing-automation-solution-for-wordpress Affected: >= 0, <= 10.8.2 Fixed version not specified
An Ultimate Newsletter Plugin And Marketing Automation Solution For Wordpress PLUGIN · an-ultimate-newsletter-plugin-and-marketing-automation-solution-for-wordpress Affected: >= 0, <= 10.8.2 Fixed version not specified
And Marketing Automation Solution For Wordpress PLUGIN · and-marketing-automation-solution-for-wordpress Affected: >= 0, <= 10.8.2 Fixed version not specified
Changeset PLUGIN · changeset Affected: >= 0, <= 10.8.2 Fixed version not specified
For Wordpress Is Vulnerable To Missing Authorization In Versions Up To PLUGIN · for-wordpress-is-vulnerable-to-missing-authorization-in-versions-up-to Affected: >= 0, <= 10.8.2 Fixed version not specified
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