VULNERABILITY INTELLIGENCE

CVE-2023-4386

CVSS score8.1 HIGH
EPSS probability0.88%
CISA KEVNot currently listed
Published2023-10-20
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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_posts 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.

Weakness classification

  • security@wordfence.com: CWE-502
  • nvd@nist.gov: CWE-502

Primary references