CVE-2023-6623

Essential Blocks < 4.4.3 - Unauthenticated Local File Inclusion

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.

Affected

Essential Blocks

CVSS v3.1 NVD

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

50.67% chance of exploitation in the next 30 days, 99th percentile

Nuclei

critical · CWE-22

Published

2024-01-15

Updated

2025-06-11

Proof-of-concept exploits (2)

• https://wpscan.com/blog/file-inclusion-vulnerability-fixed-in-essential-blocks-4-4-3/
• https://wpscan.com/vulnerability/633c28e0-0c9e-4e68-9424-55c32789b41f

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-6623.yaml

Security advisories

• https://wpscan.com/blog/file-inclusion-vulnerability-fixed-in-essential-blocks-4-4-3

References

• CVE Record
• NVD entry