CVE-2026-63087

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-16. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

Grafana OnCall through 1.16.11 contains an unauthenticated access vulnerability that allows remote attackers to obtain a valid PluginAuthToken by sending a POST request to the internal plugin install endpoint using hardcoded default stack_id and org_id values present in the public source tree. Attackers can leverage the acquired token to authenticate against all internal API endpoints, create arbitrary Admin users via the user-context header bootstrap path, revoke the legitimate plugin token, and redirect OnCall-to-Grafana API calls to an attacker-controlled host by overwriting the organization's grafana_url and api_token.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
52%
KEV
Not listed

Published

July 16, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated Sep 19, 2026
No patch confirmed yet.
generic

Grafana OnCall 1.16.11 Unauthenticated Token Hijack via Plugin Install Endpoint | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grafana-oncall-unauthenticated-token-hijack-via-plugin-install-endpoint
generic

oss/oncall.md at main · geo-chen/oss · GitHub

https://github.com/geo-chen/oss/blob/main/oncall.md

Vendor Advisories for CVE-2026-63087(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 8× in last 7d / 94× 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 340 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-63087?
CVE-2026-63087 is a critical vulnerability published on July 16, 2026. Grafana OnCall through 1.16.11 contains an unauthenticated access vulnerability that allows remote attackers to obtain a valid PluginAuthToken by sending a POST request to the internal plugin install endpoint using hardcoded default stackid and orgid values present in the public source tree.…
When was CVE-2026-63087 disclosed?
CVE-2026-63087 was first published in the National Vulnerability Database on July 16, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63087 actively exploited?
CVE-2026-63087 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 47.9% of all scored CVEs.
What is the CVSS score of CVE-2026-63087?
CVE-2026-63087 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-63087?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63087, 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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