CVE-2026-19516

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-11. the CNA's CVSS baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:grafana, epss, ghsa
Trending — 3 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: None knownExposed: 0

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

A caller-supplied X-Grafana-URL request header controls the destination of mcp-grafana's outbound requests, and the grafana_api_request tool lets the caller also choose the HTTP method, path, and body. Because the destination is not restricted to the configured Grafana instance, a caller can direct requests at internal, loopback, and link-local network services (including metadata endpoints) and read the responses, resulting in server-side request forgery. The fix for CVE-2026-15583 prevented the configured service-account token from being sent to unintended destinations but did not restrict the destinations themselves.

CVSS v3
9.1
EG Score
9.1(high)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity91% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 19, 2026

References (1)

Vendor Advisories for CVE-2026-19516(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 54× in last 7d / 86× 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.

  1. 2026-08-21 06:20 UTCGHSA enrichment
  2. 2026-08-21 01:58 UTCEG score recompute
  3. 2026-08-21 01:58 UTCGHSA enrichment
  4. 2026-08-20 22:55 UTCEPSS rescore
  5. 2026-08-20 21:36 UTCGHSA enrichment
  6. 2026-08-20 17:14 UTCGHSA enrichment
  7. 2026-08-20 12:48 UTCGHSA enrichment
  8. 2026-08-20 08:22 UTCGHSA enrichment
  9. 2026-08-20 04:00 UTCGHSA enrichment
  10. 2026-08-19 23:37 UTCGHSA enrichment
  11. 2026-08-19 19:14 UTCGHSA enrichment
  12. 2026-08-19 18:58 UTCGHSA enrichment
  13. 2026-08-19 17:49 UTCEG score recompute
  14. 2026-08-19 17:49 UTCGHSA enrichment
  15. 2026-08-19 17:03 UTCEPSS rescore
  16. 2026-08-19 13:15 UTCGHSA enrichment
  17. 2026-08-19 08:53 UTCGHSA enrichment
  18. 2026-08-19 04:29 UTCGHSA enrichment
  19. 2026-08-19 00:05 UTCGHSA enrichment
  20. 2026-08-18 19:39 UTCGHSA enrichment
  21. 2026-08-18 15:17 UTCEG score recompute
  22. 2026-08-18 15:17 UTCGHSA enrichment
  23. 2026-08-18 13:48 UTCEPSS rescore
  24. 2026-08-18 10:52 UTCGHSA enrichment
  25. 2026-08-18 06:30 UTCGHSA enrichment
Show 61 more
  1. 2026-08-18 02:07 UTCGHSA enrichment
  2. 2026-08-17 21:41 UTCGHSA enrichment
  3. 2026-08-17 20:12 UTCGHSA enrichment
  4. 2026-08-17 15:47 UTCEG score recompute
  5. 2026-08-17 15:47 UTCGHSA enrichment
  6. 2026-08-17 13:47 UTCEPSS rescore
  7. 2026-08-17 11:25 UTCGHSA enrichment
  8. 2026-08-17 07:03 UTCGHSA enrichment
  9. 2026-08-17 02:40 UTCGHSA enrichment
  10. 2026-08-16 22:18 UTCGHSA enrichment
  11. 2026-08-16 17:56 UTCEG score recompute
  12. 2026-08-16 17:56 UTCGHSA enrichment
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 13:34 UTCGHSA enrichment
  15. 2026-08-16 09:11 UTCGHSA enrichment
  16. 2026-08-16 04:50 UTCEG score recompute
  17. 2026-08-16 04:50 UTCGHSA enrichment
  18. 2026-08-16 02:14 UTCEPSS rescore
  19. 2026-08-16 00:28 UTCGHSA enrichment
  20. 2026-08-15 20:06 UTCGHSA enrichment
  21. 2026-08-15 15:44 UTCGHSA enrichment
  22. 2026-08-15 11:22 UTCGHSA enrichment
  23. 2026-08-15 07:00 UTCGHSA enrichment
  24. 2026-08-15 02:38 UTCEG score recompute
  25. 2026-08-15 02:38 UTCGHSA enrichment
  26. 2026-08-15 01:30 UTCEPSS rescore
  27. 2026-08-14 22:15 UTCGHSA enrichment
  28. 2026-08-14 17:53 UTCGHSA enrichment
  29. 2026-08-14 13:31 UTCGHSA enrichment
  30. 2026-08-14 09:09 UTCGHSA enrichment
  31. 2026-08-14 04:47 UTCGHSA enrichment
  32. 2026-08-14 00:25 UTCEG score recompute
  33. 2026-08-14 00:25 UTCGHSA enrichment
  34. 2026-08-13 22:00 UTCEPSS rescore
  35. 2026-08-13 20:02 UTCGHSA enrichment
  36. 2026-08-13 15:40 UTCGHSA enrichment
  37. 2026-08-13 11:18 UTCGHSA enrichment
  38. 2026-08-13 06:56 UTCGHSA enrichment
  39. 2026-08-13 02:32 UTCGHSA enrichment
  40. 2026-08-12 22:10 UTCGHSA enrichment
  41. 2026-08-12 17:48 UTCEG score recompute
  42. 2026-08-12 17:48 UTCGHSA enrichment
  43. 2026-08-12 13:50 UTCEPSS rescore
  44. 2026-08-12 13:26 UTCEG score recompute
  45. 2026-08-12 13:26 UTCGHSA enrichment
  46. 2026-08-12 10:50 UTCGHSA enrichment
  47. 2026-08-12 06:27 UTCGHSA enrichment
  48. 2026-08-12 02:05 UTCGHSA enrichment
  49. 2026-08-11 21:43 UTCEG score recompute
  50. 2026-08-11 21:43 UTCGHSA enrichment
  51. 2026-08-11 17:21 UTCEG score recompute
  52. 2026-08-11 17:21 UTCGHSA enrichment
  53. 2026-08-11 15:48 UTCEG score recompute
  54. 2026-08-11 15:48 UTCGHSA enrichment
  55. 2026-08-11 13:42 UTCEPSS rescore
  56. 2026-08-11 11:26 UTCGHSA enrichment
  57. 2026-08-11 07:04 UTCEG score recompute
  58. 2026-08-11 07:04 UTCGHSA enrichment
  59. 2026-08-11 06:24 UTCEG score recompute
  60. 2026-08-11 05:34 UTCEG score recompute
  61. 2026-08-11 05:33 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19516?
CVE-2026-19516 is a critical vulnerability published on August 11, 2026. A caller-supplied X-Grafana-URL request header controls the destination of mcp-grafana's outbound requests, and the grafanaapirequest tool lets the caller also choose the HTTP method, path, and body. Because the destination is not restricted to the configured Grafana instance, a caller can direct…
When was CVE-2026-19516 disclosed?
CVE-2026-19516 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19516 actively exploited?
CVE-2026-19516 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 86.5% of all scored CVEs.
What is the CVSS score of CVE-2026-19516?
CVE-2026-19516 has a CVSS v4.0 base score of 9.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-19516?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19516, 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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