CVE-2021-39226

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-08-25), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 100%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

Grafana is an open source data visualization platform. In affected versions unauthenticated and authenticated users are able to view the snapshot with the lowest database key by accessing the literal paths: /dashboard/snapshot/:key, or /api/snapshots/:key. If the snapshot "public_mode" configuration setting is set to true (vs default of false), unauthenticated users are able to delete the snapshot with the lowest database key by accessing the literal path: /api/snapshots-delete/:deleteKey. Regardless of the snapshot "public_mode" setting, authenticated users are able to delete the snapshot with the lowest database key by accessing the literal paths: /api/snapshots/:key, or /api/snapshots-delete/:deleteKey. The combination of deletion and viewing enables a complete walk through all snapshot data while resulting in complete snapshot data loss. This issue has been resolved in versions 8.1.6 and 7.5.11. If for some reason you cannot upgrade you can use a reverse proxy or similar to block access to the literal paths: /api/snapshots/:key, /api/snapshots-delete/:deleteKey, /dashboard/snapshot/:key, and /api/snapshots/:key. They have no normal function and can be disabled without side effects.

CVSS v3
9.8
EG Score
9.8(high)
EPSS
100.0%
KEV
⚠ Exploited

Published

October 5, 2021

Last Modified

October 24, 2025

Advisory Details (8)

Auto-updated Jun 1, 2026
Patch available. Sources: github_commit, github.
github_commit

commit 2d456a637585 (grafana/grafana)

Fix landed in grafana/grafana commit 2d456a637585 — awaiting tagged release

https://github.com/grafana/grafana/commit/2d456a6375855364d098ede379438bf7f0667269
generic

oss-security - CVE-2021-39226 Grafana snapshot authentication bypass

http://www.openwall.com/lists/oss-security/2021/10/05/4
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20211029-0008/
generic

[SECURITY] Fedora 34 Update: grafana-7.5.11-1.fc34 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E6ANHRDBXQT6TURLP2THM26ZPDINFBEG/
generic

[SECURITY] Fedora 35 Update: grafana-7.5.11-1.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DCKBFUSY6V4VU5AQUYWKISREZX5NLQJT/
generic

What's new in Grafana | Grafana documentation

https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-1-6/
generic

What's new in Grafana | Grafana documentation

https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-11/
github Patch Available

CVE-2021-39226 Snapshot authentication bypass · Advisory · grafana/grafana · GitHub

https://github.com/grafana/grafana/security/advisories/GHSA-69j6-29vr-p3j9

Vendor Advisories for CVE-2021-39226(3)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatopenshift4/ose-grafana:v4.8.0-202208311019.p0.gf98b47f.assembly.stream2022-09-14redhat
redhatopenshift4/ose-grafana:v4.7.0-202208310205.p0.g613acad.assembly.stream2022-09-13redhat
redhatopenshift4/ose-grafana:v4.9.0-202208311003.p0.g3b7bed6.assembly.stream2022-09-12redhat
redhatopenshift4/ose-grafana:v4.6.0-202208310224.p0.gcf170c0.assembly.stream2022-09-09redhat
redhatopenshift3/grafana:v3.11.784-1.g423963f2022-09-07redhat
redhatopenshift4/ose-grafana:v4.10.0-202202160023.p0.g48aec35.assembly.stream2022-03-10redhat
redhatgrafana-0:6.3.6-3.el8_22021-10-12redhat
redhatgrafana-0:7.3.6-3.el8_42021-10-12redhat
redhatgrafana-0:6.2.2-7.el8_12021-10-12redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/grafana/grafana—8.1.6—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(6)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 90× in last 7d / 383× 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 545 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2021/CVE-2021-39226.yaml
    First seen Jan 1, 2021

    Grafana Snapshot - Authentication Bypass

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2021-39226?
CVE-2021-39226 is a critical vulnerability published on October 5, 2021. Grafana is an open source data visualization platform. In affected versions unauthenticated and authenticated users are able to view the snapshot with the lowest database key by accessing the literal paths: /dashboard/snapshot/:key, or /api/snapshots/:key. If the snapshot "publicmode" configuration…
When was CVE-2021-39226 disclosed?
CVE-2021-39226 was first published in the National Vulnerability Database on October 5, 2021, with the most recent update on October 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-39226 actively exploited?
Yes. CISA added CVE-2021-39226 to the Known Exploited Vulnerabilities catalog on August 25, 2022, affecting Grafana Labs Grafana. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2021-39226?
CVE-2021-39226 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2021-39226?
CVE-2021-39226 affects Grafana Labs Grafana. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2021-39226?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-39226, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-39226

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