WordPress Course Builder Theme < 3.6.6 is vulnerable to a high priority PHP Object Injection
High priority Mitigate immediately
< 3.6.6Vulnerable version(s)
3.6.6Fixed version
29 May, 2025
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Get startedRisks
CVSS 9.8This vulnerability is highly dangerous and expected to become exploited.
9.8
PHP Object Injection
This could allow a malicious actor to execute code injection, SQL injection, path traversal, denial of service, and more if a proper POP chain is present.
CVSS score is a way to evaluate and rank reported vulnerabilities in a standardized and repeatable way but which is not ideal for WordPress.
Solutions
We advise to mitigate or resolve the vulnerability immediately.
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Patchstack has issued a mitigation rule to block any attacks until you have updated to a fixed version.
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Get startedUpdate to version 3.6.6 or later.
Update to version 3.6.6 or later to remove the vulnerability.
Details
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Timeline
29 May, 2025
Early warning sent out to Patchstack customers
29 May, 2025
Published by Patchstack
29 May, 2025