The Advanced Database Cleaner WordPress plugin before 3.0.4 does not sanitise and escape $_GET keys and values before outputting them back in attributes, leading to Reflected Cross-Site Scripting issues
CVE-2021-24921 is a medium severity with CVSS 6.1 Cross-Site Scripting issue affecting the Plugin Advanced Database Cleaner – Optimize & Clean Database to Speed Up Site Performance. It affects Versions before 3.0.4 and is fixed in 3.0.4.
Use the related hub and response guides to connect this CVE-2021-24921 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-2021-24921 is tracked for the Plugin Advanced Database Cleaner – Optimize & Clean Database to Speed Up Site Performance as medium severity with CVSS 6.1. The affected range is Versions before 3.0.4. Update Advanced Database Cleaner – Optimize & Clean Database to Speed Up Site Performance to 3.0.4 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 3.0.4.
Confirm Advanced Database Cleaner – Optimize & Clean Database to Speed Up Site Performance is updated to 3.0.4 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 |
advanced-database-cleaner
View on wordpress.org
|
| CVE | CVE-2021-24921 |
| Patched Versions |
3.0.4
|
| Affected Versions |
Versions before 3.0.4
|
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.
Advanced Database Cleaner <= 3.1.2 - Authenticated (Administrator+) SQL Injection
Advanced Database Cleaner <= 3.0.1 - SQL injection
Advanced Database Cleaner <= 3.1.3 - Authenticated(Administrator+) PHP Object Injection via process_bulk_action
Advanced Database Cleaner <= 3.1.0 - Reflected Cross-Site Scripting
Advanced Database Cleaner <= 3.1.6 - Cross-Site Request Forgery
Advanced Database Cleaner <= 3.1.6 - Cross-Site Request Forgery to Settings Manipulation
Advanced Database Cleaner <= 3.1.1 - Cross-Site Request Forgery via aDBc_save_settings_callback
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