CVE-2026-66627

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-18. a secondary CVSS source baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.9Exploit: None knownExposed: 0

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

Unrestricted Upload of File with Dangerous Type vulnerability in EDGE22 Studios Ltd. GP Premium allows Remote Code Inclusion.

This issue affects GP Premium: from n/a through 2.5.5.

CVSS v3
9.9
EG Score
9.9(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity99% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

August 18, 2026

Last Modified

September 8, 2026

Advisory Details (1)

Auto-updated Sep 15, 2026
No patch confirmed yet.
generic

Arbitrary File Upload in WordPress GP Premium Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/gp-premium/vulnerability/wordpress-gp-premium-plugin-2-5-5-arbitrary-file-upload-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-66627(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 / 228× 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.

Showing the most recent 100 of 269 total refreshes for this CVE.

  1. 2026-09-21 13:32 UTCGHSA enrichment
  2. 2026-09-21 09:43 UTCGHSA enrichment
  3. 2026-09-21 06:05 UTCGHSA enrichment
  4. 2026-09-21 01:50 UTCGHSA enrichment
  5. 2026-09-20 22:13 UTCEG score recompute
  6. 2026-09-20 22:13 UTCGHSA enrichment
  7. 2026-09-20 20:16 UTCEPSS rescore
  8. 2026-09-20 18:35 UTCGHSA enrichment
  9. 2026-09-20 14:08 UTCGHSA enrichment
  10. 2026-09-20 09:42 UTCGHSA enrichment
  11. 2026-09-20 02:41 UTCGHSA enrichment
  12. 2026-09-19 22:51 UTCGHSA enrichment
  13. 2026-09-19 18:45 UTCEG score recompute
  14. 2026-09-19 18:45 UTCGHSA enrichment
  15. 2026-09-19 14:37 UTCGHSA enrichment
  16. 2026-09-19 10:56 UTCGHSA enrichment
  17. 2026-09-19 05:23 UTCGHSA enrichment
  18. 2026-09-19 01:44 UTCGHSA enrichment
  19. 2026-09-18 21:53 UTCEG score recompute
  20. 2026-09-18 21:53 UTCGHSA enrichment
  21. 2026-09-18 19:28 UTCEPSS rescore
  22. 2026-09-18 16:45 UTCGHSA enrichment
  23. 2026-09-18 12:31 UTCGHSA enrichment
  24. 2026-09-18 08:44 UTCGHSA enrichment
  25. 2026-09-18 05:07 UTCGHSA enrichment
Show 75 more
  1. 2026-09-18 01:30 UTCGHSA enrichment
  2. 2026-09-17 21:52 UTCEG score recompute
  3. 2026-09-17 21:52 UTCGHSA enrichment
  4. 2026-09-17 13:14 UTCGHSA enrichment
  5. 2026-09-17 08:52 UTCGHSA enrichment
  6. 2026-09-17 05:13 UTCGHSA enrichment
  7. 2026-09-17 01:35 UTCGHSA enrichment
  8. 2026-09-16 21:58 UTCGHSA enrichment
  9. 2026-09-16 15:10 UTCEG score recompute
  10. 2026-09-16 15:10 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 10:55 UTCGHSA enrichment
  13. 2026-09-16 07:18 UTCEG score recompute
  14. 2026-09-16 07:18 UTCGHSA enrichment
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-16 03:38 UTCGHSA enrichment
  17. 2026-09-16 00:00 UTCGHSA enrichment
  18. 2026-09-15 19:10 UTCGHSA enrichment
  19. 2026-09-15 15:19 UTCGHSA enrichment
  20. 2026-09-15 11:38 UTCGHSA enrichment
  21. 2026-09-15 07:21 UTCGHSA enrichment
  22. 2026-09-15 03:44 UTCEG score recompute
  23. 2026-09-15 03:43 UTCGHSA enrichment
  24. 2026-09-15 00:06 UTCGHSA enrichment
  25. 2026-09-14 19:46 UTCGHSA enrichment
  26. 2026-09-14 14:47 UTCGHSA enrichment
  27. 2026-09-14 11:09 UTCGHSA enrichment
  28. 2026-09-14 07:32 UTCGHSA enrichment
  29. 2026-09-14 03:55 UTCGHSA enrichment
  30. 2026-09-14 00:18 UTCGHSA enrichment
  31. 2026-09-13 20:40 UTCGHSA enrichment
  32. 2026-09-13 17:02 UTCEG score recompute
  33. 2026-09-13 17:02 UTCGHSA enrichment
  34. 2026-09-13 13:24 UTCGHSA enrichment
  35. 2026-09-13 09:46 UTCGHSA enrichment
  36. 2026-09-13 06:09 UTCGHSA enrichment
  37. 2026-09-13 02:32 UTCGHSA enrichment
  38. 2026-09-12 22:54 UTCGHSA enrichment
  39. 2026-09-12 19:06 UTCGHSA enrichment
  40. 2026-09-12 15:28 UTCEG score recompute
  41. 2026-09-12 15:28 UTCGHSA enrichment
  42. 2026-09-12 11:46 UTCGHSA enrichment
  43. 2026-09-12 08:09 UTCGHSA enrichment
  44. 2026-09-12 04:31 UTCGHSA enrichment
  45. 2026-09-12 00:53 UTCGHSA enrichment
  46. 2026-09-11 21:15 UTCGHSA enrichment
  47. 2026-09-11 17:38 UTCEG score recompute
  48. 2026-09-11 17:38 UTCGHSA enrichment
  49. 2026-09-11 14:53 UTCEPSS rescore
  50. 2026-09-11 13:16 UTCEG score recompute
  51. 2026-09-11 13:16 UTCGHSA enrichment
  52. 2026-09-11 09:37 UTCEPSS rescore
  53. 2026-09-11 07:56 UTCGHSA enrichment
  54. 2026-09-11 04:18 UTCGHSA enrichment
  55. 2026-09-11 00:40 UTCGHSA enrichment
  56. 2026-09-10 20:23 UTCGHSA enrichment
  57. 2026-09-10 16:45 UTCGHSA enrichment
  58. 2026-09-10 12:21 UTCEG score recompute
  59. 2026-09-10 12:21 UTCGHSA enrichment
  60. 2026-09-10 08:40 UTCGHSA enrichment
  61. 2026-09-10 04:48 UTCGHSA enrichment
  62. 2026-09-10 01:09 UTCGHSA enrichment
  63. 2026-09-09 18:51 UTCGHSA enrichment
  64. 2026-09-09 15:13 UTCGHSA enrichment
  65. 2026-09-09 10:44 UTCGHSA enrichment
  66. 2026-09-09 07:06 UTCGHSA enrichment
  67. 2026-09-09 03:29 UTCEG score recompute
  68. 2026-09-09 03:29 UTCGHSA enrichment
  69. 2026-09-08 22:01 UTCEPSS rescore
  70. 2026-09-08 07:41 UTCGHSA enrichment
  71. 2026-09-08 04:04 UTCGHSA enrichment
  72. 2026-09-08 00:26 UTCEG score recompute
  73. 2026-09-08 00:26 UTCGHSA enrichment
  74. 2026-09-07 23:56 UTCEG score recompute
  75. 2026-09-07 23:56 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-66627?
CVE-2026-66627 is a critical vulnerability published on August 18, 2026. Unrestricted Upload of File with Dangerous Type vulnerability in EDGE22 Studios Ltd. GP Premium allows Remote Code Inclusion. This issue affects GP Premium: from n/a through 2.5.5.
When was CVE-2026-66627 disclosed?
CVE-2026-66627 was first published in the National Vulnerability Database on August 18, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66627 actively exploited?
CVE-2026-66627 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 61.8% of all scored CVEs.
What is the CVSS score of CVE-2026-66627?
CVE-2026-66627 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-66627?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66627, 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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