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.
Metrics
CVSS 3.1 8.1/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| wpdevteam | Essential Blocks Pro | <= 1.1.0 |
| wpdevteam | Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns | <= 4.2.0 |
References
- https://plugins.trac.wordpress.org/browser/essential-blocks/trunk/includes/API/PostBlock.php?rev=2950425#L30Product
- https://www.wordfence.com/threat-intel/vulnerabilities/id/af468f83-d6ad-474c-bf7f-c4eeb6df1b54?source=cveThird Party Advisory
- https://plugins.trac.wordpress.org/browser/essential-blocks/trunk/includes/API/PostBlock.php?rev=2950425#L30Product
- https://www.wordfence.com/threat-intel/vulnerabilities/id/af468f83-d6ad-474c-bf7f-c4eeb6df1b54?source=cveThird Party Advisory
Timeline
- Published
- Oct 20, 2023
- Last modified
- Jun 17, 2026
- NVD status
- Modified