When subscribing using AcyMailing versions before 7.5.0, the 'redirect' parameter isn't properly sanitized. Turning the request from POST to GET, an attacker can craft a link containing a potentially malicious landing page and send it to the victim.
CVE-2021-24288 is a medium severity with CVSS 6.1 Vulnerability issue affecting the Plugin AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress. It affects Versions before 7.5.0 and is fixed in 7.5.0.
Use the related hub and response guides to connect this CVE-2021-24288 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-2021-24288 is tracked for the Plugin AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress as medium severity with CVSS 6.1. The affected range is Versions before 7.5.0. Update AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress to 7.5.0 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 before 7.5.0.
Confirm AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress is updated to 7.5.0 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-2021-24288 |
| Patched Versions |
7.5.0
|
| Affected Versions |
Versions before 7.5.0
|
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 <= 10.8.2 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation via 'acymailing_router'
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
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