CVE-2026-20266

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-17. a secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.1Exploit: NoneExposed: 0

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

In Splunk AI Toolkit versions below 5.7.4, a user who holds the "admin" Splunk role could execute arbitrary OS commands on the host running the Splunk Enterprise instance.

The vulnerability is possible because of an unsafe shell execution pattern in the btool configuration helper, which constructs OS command strings from dynamic parameters without disabling shell interpretation.

CVSS v3
9.1
EG Score
9.1(high)
EPSS
37.3%
KEV
Not listed

Published

June 17, 2026

Last Modified

June 22, 2026

Advisory Details (1)

Auto-updated Jun 17, 2026
No patch confirmed yet.
generic

SVD-2026-0614 | Splunk Vulnerability Disclosure

https://advisory.splunk.com/advisories/SVD-2026-0614

Vendor Advisories for CVE-2026-20266(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 90× in last 7d / 250× 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 250 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-20266?
CVE-2026-20266 is a critical vulnerability published on June 17, 2026. In Splunk AI Toolkit versions below 5.7.4, a user who holds the "admin" Splunk role could execute arbitrary OS commands on the host running the Splunk Enterprise instance. The vulnerability is possible because of an unsafe shell execution pattern in the btool configuration helper, which constructs…
When was CVE-2026-20266 disclosed?
CVE-2026-20266 was first published in the National Vulnerability Database on June 17, 2026, with the most recent update on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20266 actively exploited?
CVE-2026-20266 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 37.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-20266?
CVE-2026-20266 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-20266?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20266, 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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