AcyMailing SMTP Newsletter <= 10.11.1 - Authenticated (Subscriber+) Stored Cross-Site Scripting

6.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2026-28182
CVSS 6.4 (Medium)
Publicly Published August 13, 2026
Last Updated August 15, 2026
Researcher Asim Alshaya

Description

The AcyMailing SMTP Newsletter plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 10.11.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

References

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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 11.0.0, or a newer patched version
Affected Version
  • <= 10.11.1
Patched Version
  • 11.0.0

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

# Title CVE ID CVSS Researchers Date
1 AcyMailing SMTP Newsletter <= 10.11.1 - Missing Authorization CVE-2026-28181 4.3 Asim Alshaya August 13, 2026
2 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
3 AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress < 10.11.1 - Unauthenticated SQL Injection CVE-2026-14920 7.5 Pedro Pinho August 6, 2026
4 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
5 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
6 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
7 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
8 AcyMailing <= 10.8.2 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation via 'acymailing_router' CVE-2026-5200 8.8 Azril Fathoni (kiseki) May 19, 2026
9 AcyMailing 9.11.0 - 10.8.1 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation CVE-2026-3614 8.8 Ren Voza April 15, 2026
10 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

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