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CVE-2023-6623

68
FAUCET Score

CVE-2023-6623 is a critical Local File Inclusion vulnerability affecting the Essential Blocks WordPress plugin prior to version 4.4.3. Unauthenticated attackers can exploit this flaw by overwriting local variables during REST API template rendering, potentially leading to full compromise of the affected system. With a CVSS score of 9.8 (CRITICAL) and an EPSS score indicating high exploitability, this vulnerability poses a significant risk. While there is no evidence of active exploitation in the wild or KEV listing, public Nuclei templates exist, suggesting readily available exploit code. Community discussion and media coverage are currently minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.4.3CPE matchmatch criteria
cpe:2.3:a:wpdeveloper:essential_blocks:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
50.67%
Probability of exploitation in next 30 days
EPSS Percentile
98.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2023-6623 · Jan 4, 2024
This CVE's current EPSS score of 0.5067 is in the 97th percentile among its peer group of 36,835 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

wpscan.com / blog/file-inclusion-vulnerability-fixed-in-essential-blocks-4-4-3
ExploitThird Party Advisory
wpscan.com / vulnerability/633c28e0-0c9e-4e68-9424-55c32789b41f
ExploitThird Party Advisory