CVE-2023-6623: unknown essential blocks Path Traversal
Vulnerability summary
CVE-2023-6623 is a critical (CVSS 9.8) Path Traversal vulnerability in unknown essential blocks. EPSS estimates a 50.67% chance of exploitation in the next 30 days, higher than 98.9% of scored vulnerabilities. 2 public exploits are recorded. Fixed in 4.4.3.
Timeline
- 15-01-2024PublishedVulnerability first disclosed.
- 11-06-2025Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
3 scores · 3 sources · 1 version- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- wordfenceSource9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
50.67%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 50.67% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundExploit Reference (wpscan.com)
Maturity: unknown
Exploit Reference (wpscan.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Unknown1 product
- essential blocks< 4.4.3
Wordpress1 product
- essential-blocks≤ 4.4.2 (fixed in 4.4.3)
Wpdeveloper1 product
- essential_blocks< 4.4.3
3 vendors · 3 products
References
3 links- wpscan.com/vulnerability/633c28e0-0c9e-4e68-9424-55c32789b41fExploitVDB EntryTechnical DescriptionThird Party Advisory
- wpscan.com/blog/file-inclusion-vulnerability-fixed-in-essential-blocks-4-4-3/ExploitThird Party Advisory