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CVE-2023-4402

30
FAUCET Score

CVE-2023-4402 is a critical PHP Object Injection vulnerability affecting the Essential Blocks plugin (versions up to 4.2.0) for WordPress, including both free and pro versions. This allows unauthenticated attackers to inject PHP Objects via the get_products function. Rated 9.8 CVSS (Critical), it has low attack complexity and can lead to arbitrary file deletion, data retrieval, or code execution if a suitable POP chain exists elsewhere on the system. While no active exploitation or public exploits are confirmed, the vulnerability has garnered significant community discussion, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.2.1CPE matchmatch criteria
cpe:2.3:a:wpdeveloper:essential_blocks:*:*:*:*:*:wordpress:*:*
< 1.1.1CPE matchmatch criteria
cpe:2.3:a:wpdeveloper:essential_blocks_pro:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.34%
Probability of exploitation in next 30 days
EPSS Percentile
68.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0134 is in the 55th percentile among its peer group of 36,821 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

plugins.trac.wordpress.org / browser/essential-blocks/trunk/includes/API/Product.php
Exploit
wordfence.com / threat-intel/vulnerabilities/id/1ede7a25-9bb2-408e-b7fb-e5bd4f594351
Third Party Advisory