CVE-2026-63087

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH 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: 0%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(high)
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%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

July 16, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated Jul 25, 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 36× in last 7d / 53× 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. 2026-07-29 11:09 UTCGHSA enrichment
  2. 2026-07-29 07:21 UTCGHSA enrichment
  3. 2026-07-29 03:17 UTCGHSA enrichment
  4. 2026-07-28 23:30 UTCGHSA enrichment
  5. 2026-07-28 19:09 UTCEG score recompute
  6. 2026-07-28 19:09 UTCGHSA enrichment
  7. 2026-07-28 15:37 UTCEPSS rescore
  8. 2026-07-28 15:13 UTCGHSA enrichment
  9. 2026-07-28 11:24 UTCGHSA enrichment
  10. 2026-07-28 07:22 UTCGHSA enrichment
  11. 2026-07-28 03:33 UTCGHSA enrichment
  12. 2026-07-27 23:44 UTCGHSA enrichment
  13. 2026-07-27 19:13 UTCGHSA enrichment
  14. 2026-07-27 15:16 UTCEG score recompute
  15. 2026-07-27 15:16 UTCGHSA enrichment
  16. 2026-07-27 14:14 UTCEPSS rescore
  17. 2026-07-27 10:15 UTCGHSA enrichment
  18. 2026-07-27 06:27 UTCGHSA enrichment
  19. 2026-07-27 02:39 UTCGHSA enrichment
  20. 2026-07-26 22:50 UTCGHSA enrichment
  21. 2026-07-26 19:01 UTCGHSA enrichment
  22. 2026-07-26 15:13 UTCEG score recompute
  23. 2026-07-26 15:13 UTCGHSA enrichment
  24. 2026-07-26 14:54 UTCEPSS rescore
  25. 2026-07-26 14:54 UTCEPSS rescore
Show 28 more
  1. 2026-07-26 11:25 UTCEG score recompute
  2. 2026-07-26 11:25 UTCGHSA enrichment
  3. 2026-07-26 04:37 UTCEG score recompute
  4. 2026-07-26 04:37 UTCGHSA enrichment
  5. 2026-07-25 14:18 UTCEPSS rescore
  6. 2026-07-25 14:18 UTCEPSS rescore
  7. 2026-07-24 14:18 UTCEPSS rescore
  8. 2026-07-24 14:18 UTCEPSS rescore
  9. 2026-07-23 14:18 UTCEPSS rescore
  10. 2026-07-23 14:18 UTCEPSS rescore
  11. 2026-07-23 03:22 UTCEG score recompute
  12. 2026-07-22 14:08 UTCEPSS rescore
  13. 2026-07-22 14:08 UTCEPSS rescore
  14. 2026-07-21 15:25 UTCEPSS rescore
  15. 2026-07-21 15:25 UTCEPSS rescore
  16. 2026-07-20 17:08 UTCEPSS rescore
  17. 2026-07-19 14:31 UTCEPSS rescore
  18. 2026-07-19 02:35 UTCEG score recompute
  19. 2026-07-19 02:35 UTCGHSA enrichment
  20. 2026-07-19 02:29 UTCEPSS rescore
  21. 2026-07-18 10:04 UTCEPSS rescore
  22. 2026-07-17 14:14 UTCEG score recompute
  23. 2026-07-17 14:14 UTCGHSA enrichment
  24. 2026-07-17 03:55 UTCGHSA enrichment
  25. 2026-07-17 00:07 UTCGHSA enrichment
  26. 2026-07-16 20:18 UTCGHSA enrichment
  27. 2026-07-16 16:29 UTCEG score recompute
  28. 2026-07-16 16:28 UTCMITRE cvelistV5first tracked

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 0% probability of exploitation in the next 30 days, which ranks it in the top 65.0% 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-63087

Explore →

Is Your Infrastructure Affected by CVE-2026-63087?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs