High vulnerability
CVE-2023-4386: The Essential Blocks plugin for WordPress is vulnerable to PHP Object Injection
Tracked since May 6, 2026
CVSS Breakdown
CVSS Base Score
Attack Vector
N/A
Requires physical access to exploit.
CIA Impact
Confidentiality N/A
Integrity N/A
Availability N/A
Exploit Probability (EPSS)
NaN%
NaN% probability of exploitation in 30 days
This vulnerability has a relatively low exploitation probability, but should still be patched according to your standard timelines.
Low
Insurance Impact Assessment
🛡️
Significant Impact
High-severity vulnerabilities may affect cyber insurance pricing and coverage terms. Demonstrating patch management reduces underwriting friction.
CVE CVE-2023-4386 with CVSS 8.1. The Essential Blocks plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 4.2.0 via deserialization of untrusted input in the get_posts function. This allows unauthenticated attackers to inject a PHP Object. No POP chain is present in the vulnerable plugin. If
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