Is CVE-2023-4402 actively exploited?

No active exploitation of CVE-2023-4402 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-4402 be exploited remotely?

Yes. CVE-2023-4402 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-4402?

CVE-2023-4402 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-4402

CWE-502Published: October 20, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

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_products function. This allows unauthenticated attackers to inject a PHP Object. No POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

NVD Source

Risk Analysis

The Essential Blocks plugin for WordPress contains a PHP Object Injection vulnerability due to insecure deserialization. While the plugin itself lacks a POP chain, the presence of other vulnerable themes or plugins on the system could enable remote code execution or unauthorized data access.

No public exploit is currently known for this issue, and it is not tracked in the CISA KEV. It is remotely exploitable without requiring authentication.

Recommended Action

Administrators should update the Essential Blocks plugin to a version beyond 4.2.0 and audit other installed plugins for potential POP chain compatibility.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-4402 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-502): Insecure deserialization vulnerabilities allow attackers to inject malicious objects during deserialization, potentially enabling remote code execution.