AcyMailing <= 10.8.2 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation via 'acymailing_router'

8.8
Missing Authorization
CVE CVE-2026-5200
CVSS 8.8 (High)
Publicly Published May 19, 2026
Last Updated May 20, 2026
Researcher Azril Fathoni (kiseki) - Heroes Cyber Security

Description

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.

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Vulnerability Details for AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress

Software Type Plugin
Software Slug acymailing (view on wordpress.org)
Patched? Yes
Remediation Update to version 10.9.0, or a newer patched version
Affected Version
  • <= 10.8.2
Patched Version
  • 10.9.0

Recent vulnerabilities in AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress

# Title CVE ID CVSS Researchers Date
1 AcyMailing <= 10.11.1 - Authenticated (Subscriber+) Missing Authorization to Account Takeover via Notification Template Update CVE-2026-15426 8.8 d.v4n_s3c August 11, 2026
2 AcyMailing <= 10.10.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'alignment' Attribute CVE-2026-12170 6.4 Chloe Chamberland, Wordfence PRISM July 8, 2026
3 AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress <= 10.11.0 - Unauthenticated SQL Injection CVE-2026-57739 7.5 kai63001 July 6, 2026
4 AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress <= 10.11.1 - Missing Authorization CVE-2026-57740 4.3 anhcd05 July 6, 2026
5 AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress <= 10.11.0 - Unauthenticated Stored Cross-Site Scripting CVE-2026-57741 7.2 daroo July 6, 2026
6 AcyMailing 9.11.0 - 10.8.1 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation CVE-2026-3614 8.8 Ren Voza April 15, 2026
7 AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress <= 9.11.0 - Reflected Cross-Site Scripting CVE-2025-24617 6.1 Dimas Maulana December 30, 2024
8 AcyMailing <= 9.7.2 - Authenticated (Subscriber+) Arbitrary File Upload via acym_extractArchive Function CVE-2024-7384 7.5 Arkadiusz Hydzik August 21, 2024
9 AcyMailing SMTP Newsletter <= 8.6.2 - Reflected Cross-Site Scripting CVE-2023-41867 6.1 Rafshanzani Suhada September 5, 2023
10 AcyMailing SMTP Newsletter < 7.5.0 - Open Redirect CVE-2021-24288 6.1 Viktor Markopoulos April 29, 2021

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