CVE-2026-15583

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2026-07-15. the CNA's CVSS baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:grafana, epss, ghsa
Trending — 3 sources updated this week
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.6Exploit: None knownExposed: 0

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

A confused-deputy flaw in Grafana MCP Server allows an unauthenticated remote attacker to exfiltrate the server's environment-configured Grafana service-account token by supplying a crafted X-Grafana-URL request header. This also enables SSRF against arbitrary internal services, including cloud metadata endpoints.

CVSS v3
8.6
EG Score
8.6(medium)
EG Risk
54(Track)
EG Risk 54/100SSVC: 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
Severity86% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

July 15, 2026

Last Modified

August 27, 2026

References (1)

Vendor Advisories for CVE-2026-15583(2)

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 22× in last 7d / 114× 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 153 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-15583?
CVE-2026-15583 is a high vulnerability published on July 15, 2026. A confused-deputy flaw in Grafana MCP Server allows an unauthenticated remote attacker to exfiltrate the server's environment-configured Grafana service-account token by supplying a crafted X-Grafana-URL request header. This also enables SSRF against arbitrary internal services, including cloud…
When was CVE-2026-15583 disclosed?
CVE-2026-15583 was first published in the National Vulnerability Database on July 15, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15583 actively exploited?
CVE-2026-15583 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 57.5% of all scored CVEs.
What is the CVSS score of CVE-2026-15583?
CVE-2026-15583 has a CVSS v4.0 base score of 8.6 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-15583?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15583, 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.

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