CVE-2023-6623

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2024-01-15. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 51%
  • Public exploit code is available (ssvc poc, epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 51%CVSS: 9.8Exploit: ssvc poc · epss top5pct · epss high · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
9.8
EG Score
9.8(medium)
EG Risk
85(Attend)
EG Risk 85/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation65% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
51%
EPSS %ILE
99%
KEV
Not listed

Published

January 15, 2024

Last Modified

June 11, 2025

Advisory Details (2)

Auto-updated Jul 28, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Essential Blocks < 4.4.3 – Unauthenticated Local File Inclusion | CVE 2023-6623 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/633c28e0-0c9e-4e68-9424-55c32789b41f
generic🟡 PoC Available

File Inclusion Vulnerability Fixed In Essential Blocks 4.4.3 | WPScan

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

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-30 16:26 UTCEPSS rescore
  2. 2026-07-30 01:29 UTCEPSS rescore
  3. 2026-07-28 15:34 UTCEPSS rescore
  4. 2026-07-28 15:34 UTCEPSS rescore
  5. 2026-07-26 14:53 UTCEPSS rescore
  6. 2026-07-25 14:16 UTCEPSS rescore
  7. 2026-07-24 14:16 UTCEPSS rescore
  8. 2026-07-23 02:30 UTCEG score recompute
  9. 2026-07-22 23:17 UTCEG score recompute
  10. 2026-07-22 14:07 UTCEPSS rescore
  11. 2026-07-22 14:07 UTCEPSS rescore
  12. 2026-07-21 15:23 UTCEPSS rescore
  13. 2026-07-20 17:06 UTCEPSS rescore
  14. 2026-07-19 14:30 UTCEPSS rescore
  15. 2026-07-19 14:29 UTCEPSS rescore
  16. 2026-07-18 10:03 UTCEPSS rescore
  17. 2026-07-18 10:03 UTCEPSS rescore
  18. 2026-07-16 17:01 UTCEPSS rescore
  19. 2026-07-15 16:56 UTCEPSS rescore
  20. 2026-07-15 01:59 UTCEPSS rescore
  21. 2026-07-15 01:59 UTCEPSS rescore
  22. 2026-07-13 06:11 UTCEPSS rescore
  23. 2026-07-12 05:45 UTCEPSS rescore
  24. 2026-07-12 05:45 UTCEPSS rescore
  25. 2026-07-11 08:26 UTCEPSS rescore
Show 41 more
  1. 2026-07-09 19:08 UTCEPSS rescore
  2. 2026-07-08 15:13 UTCEPSS rescore
  3. 2026-07-04 06:29 UTCEPSS rescore
  4. 2026-07-01 15:05 UTCEPSS rescore
  5. 2026-06-30 23:21 UTCEPSS rescore
  6. 2026-06-30 23:21 UTCEPSS rescore
  7. 2026-06-28 04:55 UTCEPSS rescore
  8. 2026-06-27 03:07 UTCEPSS rescore
  9. 2026-06-25 13:48 UTCEPSS rescore
  10. 2026-06-25 13:48 UTCEPSS rescore
  11. 2026-06-24 14:04 UTCEPSS rescore
  12. 2026-06-24 14:04 UTCEPSS rescore
  13. 2026-06-23 21:31 UTCEPSS rescore
  14. 2026-06-23 21:31 UTCEPSS rescore
  15. 2026-06-22 14:24 UTCEPSS rescore
  16. 2026-06-22 14:24 UTCEPSS rescore
  17. 2026-06-21 01:58 UTCEPSS rescore
  18. 2026-06-21 01:58 UTCEPSS rescore
  19. 2026-06-18 17:51 UTCEPSS rescore
  20. 2026-06-17 17:51 UTCEPSS rescore
  21. 2026-06-15 17:47 UTCEPSS rescore
  22. 2026-06-14 23:16 UTCEPSS rescore
  23. 2026-06-12 23:11 UTCEPSS rescore
  24. 2026-06-10 22:17 UTCEPSS rescore
  25. 2026-06-10 13:21 UTCEPSS rescore
  26. 2026-06-08 14:16 UTCEPSS rescore
  27. 2026-06-08 14:16 UTCEPSS rescore
  28. 2026-06-07 15:24 UTCEPSS rescore
  29. 2026-06-07 15:24 UTCEPSS rescore
  30. 2026-06-05 22:46 UTCEPSS rescore
  31. 2026-06-05 22:46 UTCEPSS rescore
  32. 2026-06-01 13:51 UTCEPSS rescore
  33. 2026-05-29 13:43 UTCEPSS rescore
  34. 2026-05-28 13:44 UTCEPSS rescore
  35. 2026-05-28 13:44 UTCEPSS rescore
  36. 2026-05-26 13:43 UTCEPSS rescore
  37. 2026-05-26 13:43 UTCEPSS rescore
  38. 2026-05-26 07:18 UTCEPSS rescore
  39. 2026-05-26 07:18 UTCEPSS rescore
  40. 2026-05-24 10:19 UTCEG score recompute
  41. 2026-05-24 10:19 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2023/CVE-2023-6623.yaml
    First seen Jan 1, 2023

    Essential Blocks < 4.4.3 - Local File Inclusion

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-6623?
CVE-2023-6623 is a critical vulnerability published on January 15, 2024. 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.
When was CVE-2023-6623 disclosed?
CVE-2023-6623 was first published in the National Vulnerability Database on January 15, 2024, with the most recent update on June 11, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-6623 actively exploited?
CVE-2023-6623 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 51% probability of exploitation in the next 30 days, which ranks it in the top 1.2% of all scored CVEs.
What is the CVSS score of CVE-2023-6623?
CVE-2023-6623 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-6623?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-6623, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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