CVE-2026-9089

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-21. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

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

The ConnectWise Automate™ Agent does not fully verify the authenticity of components obtained during plugin loading and self-update operations. This issue is addressed in Automate 2026.5.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
23.0%
KEV
Not listed

Published

May 21, 2026

Last Modified

May 22, 2026

References (1)

Vendor Advisories for CVE-2026-9089(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 6× in last 7d / 67× 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 131 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-9089?
CVE-2026-9089 is a high vulnerability published on May 21, 2026. The ConnectWise Automate™ Agent does not fully verify the authenticity of components obtained during plugin loading and self-update operations. This issue is addressed in Automate 2026.5.
When was CVE-2026-9089 disclosed?
CVE-2026-9089 was first published in the National Vulnerability Database on May 21, 2026, with the most recent update on May 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9089 actively exploited?
CVE-2026-9089 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 23.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-9089?
CVE-2026-9089 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-9089?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9089, 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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