CVE-2026-19516

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-11. 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
9.1EG
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(medium)
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
15%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 31, 2026

Advisory Details (1)

Auto-updated Sep 15, 2026
No patch confirmed yet.
generic

Grafana MCP server-side request forgery via X-Grafana-URL header (grafana_api_request) | Grafana Labs

https://grafana.com/security/security-advisories/cve-2026-19516

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 39× in last 7d / 184× 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 276 total refreshes for this CVE.

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

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 31, 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 84.6% of all scored CVEs.
What is the CVSS score of CVE-2026-19516?
CVE-2026-19516 has a CVSS v3 base score of 9.1 (NVD).
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.

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