WordPress s2Member Plugin <= 250701 is vulnerable to a high priority PHP Object Injection
High priority Mitigate immediately
<= 250701Vulnerable version(s)
250905Fixed version
21 Aug, 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 250905 or later.
Update to version 250905 or later to remove the vulnerability. Patchstack users can turn on auto-update for vulnerable plugins only.
Details
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Timeline
10 Sep, 2025