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TI-2023-06070 Aliases CVE-2023-6623GHSA-phjg-gj5x-8j96

Essential Blocks < 4.4.3 - Unauthenticated Local File Inclusion

Priority HIGH 82CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

The Essential Blocks WordPress plugin before 4.4.3 does not prevent unauthenticated attackers from overwriting local variables when rendering templates over the REST API, which may lead to Local File Inclusion attacks.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.50673 98th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
Fix Fixed Essential Blocks (Unknown): 4.4.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownEssential Blocksbefore 4.4.34.4.3Patch availableCNA
  • Essential Blocks VendorUnknown Affected before 4.4.3 Fixed in 4.4.3 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:wpdeveloper:essential_blocks:*:*:*:*:*:wordpress:*:*before 4.4.3Vulnerablewpdevteam
  • cpe:2.3:a:wpdeveloper:essential_blocks:*:*:*:*:*:wordpress:*:* Versions before 4.4.3 Vulnerable ·wpdevteam

Remediation

  • Fix · CNA Essential Blocks (Unknown) Fixed in 4.4.3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-6623
  2. 2026-10-03 Alias added: GHSA-phjg-gj5x-8j96

References

Exploit 2

  • TI-2024-05197 Essential Blocks < 4.7.0 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
  • TI-2023-04066 Essential Blocks <= 4.2.0 - Unauthenticated PHP Object Injection via products CVSS 3.1CRITICAL 9.8
  • TI-2023-28018 WordPress Essential Blocks plugin <= 4.2.0 - Multiple Subscriber+ Broken Access Control vulnerability CVSS 3.1HIGH 8.8
  • TI-2023-28017 WordPress Essential Blocks plugin <= 4.2.0 - Multiple Contributor+ Broken Access Control vulnerability CVSS 3.1HIGH 8.8
  • TI-2023-04052 Essential Blocks <= 4.2.0 - Unauthenticated PHP Object Injection via queries CVSS 3.1HIGH 8.1
  • TI-2025-19742 WordPress Essential Blocks plugin <= 4.8.3 - Broken Access Control vulnerability CVSS 3.1HIGH 8.8
See all 24 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences