CVE-2026-18351

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-10. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

The Drag and Drop File Upload for Elementor Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.6.0 via the elementor_file_upload function. This is due to insufficient file type validation in the is_file_type_valid() function, which uses the attacker-controlled 'type' parameter as regex keys in the MIME allowlist, allowing blacklist bypass via a crafted extension that sanitize_file_name() later normalizes to a PHP extension. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
60(Track)
EG Risk 60/100SSVC: Track

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%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
54%
KEV
Not listed

Published

September 10, 2026

Last Modified

September 10, 2026

Advisory Details (2)

Auto-updated Sep 17, 2026
No patch confirmed yet.
generic
https://plugins.svn.wordpress.org/drag-and-drop-file-upload-for-elementor-forms/tags/1.6.0/fields/file_upload.php
generic
https://plugins.svn.wordpress.org/drag-and-drop-file-upload-for-elementor-forms/tags/1.6.0/drag-and-drop-file-upload-for-elementor-forms.php

Vendor Advisories for CVE-2026-18351(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 50× in last 7d / 93× 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. 2026-09-21 11:34 UTCGHSA enrichment
  2. 2026-09-21 07:38 UTCGHSA enrichment
  3. 2026-09-21 03:42 UTCGHSA enrichment
  4. 2026-09-20 23:45 UTCGHSA enrichment
  5. 2026-09-20 19:49 UTCGHSA enrichment
  6. 2026-09-20 15:53 UTCGHSA enrichment
  7. 2026-09-20 11:58 UTCGHSA enrichment
  8. 2026-09-20 08:02 UTCGHSA enrichment
  9. 2026-09-20 03:46 UTCGHSA enrichment
  10. 2026-09-19 23:50 UTCGHSA enrichment
  11. 2026-09-19 19:54 UTCGHSA enrichment
  12. 2026-09-19 15:58 UTCEG score recompute
  13. 2026-09-19 15:58 UTCGHSA enrichment
  14. 2026-09-19 11:57 UTCGHSA enrichment
  15. 2026-09-19 08:02 UTCGHSA enrichment
  16. 2026-09-19 04:05 UTCGHSA enrichment
  17. 2026-09-19 00:09 UTCGHSA enrichment
  18. 2026-09-18 20:13 UTCEG score recompute
  19. 2026-09-18 20:13 UTCGHSA enrichment
  20. 2026-09-18 19:27 UTCEPSS rescore
  21. 2026-09-18 16:13 UTCGHSA enrichment
  22. 2026-09-18 11:57 UTCGHSA enrichment
  23. 2026-09-18 08:01 UTCGHSA enrichment
  24. 2026-09-18 04:05 UTCGHSA enrichment
  25. 2026-09-18 00:09 UTCGHSA enrichment
Show 68 more
  1. 2026-09-17 20:13 UTCEG score recompute
  2. 2026-09-17 20:13 UTCGHSA enrichment
  3. 2026-09-17 14:37 UTCGHSA enrichment
  4. 2026-09-17 10:40 UTCGHSA enrichment
  5. 2026-09-17 06:44 UTCGHSA enrichment
  6. 2026-09-17 02:23 UTCGHSA enrichment
  7. 2026-09-16 22:24 UTCGHSA enrichment
  8. 2026-09-16 18:11 UTCEG score recompute
  9. 2026-09-16 18:11 UTCGHSA enrichment
  10. 2026-09-16 14:07 UTCEPSS rescore
  11. 2026-09-16 13:57 UTCGHSA enrichment
  12. 2026-09-16 10:01 UTCGHSA enrichment
  13. 2026-09-16 06:05 UTCEG score recompute
  14. 2026-09-16 06:05 UTCGHSA enrichment
  15. 2026-09-16 05:14 UTCEPSS rescore
  16. 2026-09-16 02:09 UTCGHSA enrichment
  17. 2026-09-15 22:13 UTCGHSA enrichment
  18. 2026-09-15 18:16 UTCGHSA enrichment
  19. 2026-09-15 14:00 UTCGHSA enrichment
  20. 2026-09-15 10:04 UTCGHSA enrichment
  21. 2026-09-15 06:07 UTCEG score recompute
  22. 2026-09-15 06:07 UTCGHSA enrichment
  23. 2026-09-15 02:11 UTCGHSA enrichment
  24. 2026-09-14 22:12 UTCGHSA enrichment
  25. 2026-09-14 18:16 UTCGHSA enrichment
  26. 2026-09-14 14:19 UTCGHSA enrichment
  27. 2026-09-14 10:23 UTCGHSA enrichment
  28. 2026-09-14 06:28 UTCGHSA enrichment
  29. 2026-09-14 02:32 UTCGHSA enrichment
  30. 2026-09-13 22:36 UTCGHSA enrichment
  31. 2026-09-13 18:40 UTCEG score recompute
  32. 2026-09-13 18:40 UTCGHSA enrichment
  33. 2026-09-13 16:46 UTCEPSS rescore
  34. 2026-09-13 14:43 UTCGHSA enrichment
  35. 2026-09-13 10:46 UTCGHSA enrichment
  36. 2026-09-13 06:50 UTCGHSA enrichment
  37. 2026-09-13 02:45 UTCGHSA enrichment
  38. 2026-09-12 22:49 UTCGHSA enrichment
  39. 2026-09-12 18:53 UTCEG score recompute
  40. 2026-09-12 18:53 UTCGHSA enrichment
  41. 2026-09-12 15:00 UTCEPSS rescore
  42. 2026-09-12 14:57 UTCGHSA enrichment
  43. 2026-09-12 11:01 UTCGHSA enrichment
  44. 2026-09-12 07:03 UTCGHSA enrichment
  45. 2026-09-12 03:07 UTCGHSA enrichment
  46. 2026-09-11 23:11 UTCGHSA enrichment
  47. 2026-09-11 18:32 UTCEG score recompute
  48. 2026-09-11 18:32 UTCGHSA enrichment
  49. 2026-09-11 14:52 UTCEPSS rescore
  50. 2026-09-11 14:36 UTCGHSA enrichment
  51. 2026-09-11 10:40 UTCEG score recompute
  52. 2026-09-11 10:40 UTCGHSA enrichment
  53. 2026-09-11 09:36 UTCEPSS rescore
  54. 2026-09-11 06:42 UTCGHSA enrichment
  55. 2026-09-11 02:46 UTCGHSA enrichment
  56. 2026-09-10 22:50 UTCGHSA enrichment
  57. 2026-09-10 18:54 UTCGHSA enrichment
  58. 2026-09-10 14:58 UTCGHSA enrichment
  59. 2026-09-10 12:19 UTCEG score recompute
  60. 2026-09-10 12:19 UTCGHSA enrichment
  61. 2026-09-10 11:32 UTCEG score recompute
  62. 2026-09-10 11:32 UTCGHSA enrichment
  63. 2026-09-10 10:26 UTCGHSA enrichment
  64. 2026-09-10 06:30 UTCEG score recompute
  65. 2026-09-10 06:29 UTCGHSA enrichment
  66. 2026-09-10 02:33 UTCEG score recompute
  67. 2026-09-10 01:35 UTCEG score recompute
  68. 2026-09-10 01:34 UTCMITRE cvelistV5first tracked

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCJohenLastGen-JLG/CVE-2026-18351
    First seen Sep 11, 2026

    CVE-2026-18351 — Drag and Drop File Upload for Elementor Forms <= 1.6.0 Unauthenticated Arbitrary File Upload -> RCE

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18351?
CVE-2026-18351 is a critical vulnerability published on September 10, 2026. The Drag and Drop File Upload for Elementor Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.6.0 via the elementorfileupload function. This is due to insufficient file type validation in the isfiletypevalid() function, which uses the…
When was CVE-2026-18351 disclosed?
CVE-2026-18351 was first published in the National Vulnerability Database on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18351 actively exploited?
CVE-2026-18351 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 46.0% of all scored CVEs.
What is the CVSS score of CVE-2026-18351?
CVE-2026-18351 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-18351?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18351, 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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