CVE-2026-40783

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-17. 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: 1%CVSS: 9.9Exploit: None knownExposed: 0

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

Contributor Remote Code Execution (RCE) in Blocksy Companion Pro <= 2.1.37 versions.

CVSS v3
9.9
EG Score
9.9(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

June 17, 2026

Last Modified

June 17, 2026

Advisory Details (1)

Auto-updated Aug 30, 2026
No patch confirmed yet.
generic

Remote Code Execution (RCE) in WordPress Blocksy Companion Pro Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/blocksy-companion-pro/vulnerability/wordpress-blocksy-companion-pro-plugin-2-1-37-remote-code-execution-rce-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-40783(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 9× in last 7d / 146× 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 389 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-40783?
CVE-2026-40783 is a critical vulnerability published on June 17, 2026. Contributor Remote Code Execution (RCE) in Blocksy Companion Pro <= 2.1.37 versions.
When was CVE-2026-40783 disclosed?
CVE-2026-40783 was first published in the National Vulnerability Database on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40783 actively exploited?
CVE-2026-40783 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 56.6% of all scored CVEs.
What is the CVSS score of CVE-2026-40783?
CVE-2026-40783 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-40783?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40783, 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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