EWWW Image Optimizer before 2.8.5 allows remote command execution because it relies on a protection mechanism involving boolval, which is unavailable before PHP 5.5. Version 2.8.4 provides a partial fix.
CVE-2016-20010 is a critical severity with CVSS 9.6 Remote Code Execution issue affecting the Plugin EWWW Image Optimizer. It affects Versions up to 2.8.4 and is fixed in 2.8.5.
Use the related hub and response guides to connect this CVE-2016-20010 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-2016-20010 is tracked for the Plugin EWWW Image Optimizer as critical severity with CVSS 9.6. The affected range is Versions up to 2.8.4. Update EWWW Image Optimizer to 2.8.5 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 up to 2.8.4.
Confirm EWWW Image Optimizer is updated to 2.8.5 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 |
ewww-image-optimizer
View on wordpress.org
|
| CVE | CVE-2016-20010 |
| Patched Versions |
2.8.5
|
| Affected Versions |
Versions up to 2.8.4
|
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.
EWWW Image Optimizer <= 2.0.1 - Reflected Cross-Site Scripting
EWWW Image Optimizer <= 7.2.0 - Unauthenticated Sensitive Information Exposure via Debug Log
EWWW Image Optimizer <= 7.2.3 - Cross-Site Request Forgery
EWWW Image Optimizer <= 5.8.1 - Cross-Site Request Forgery Bypass
EWWW Image Optimizer <= 7.2.0 - Sensitive Information Exposure
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