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
Exploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 100%CVSS: 9.8Exploit: cisa kev · ssvc active · epss top5pct · epss high · public exploitExposed services: Not assessed

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
9.8CRITICALhigh confidence
EG Risk
99
EG Risk 99/100CISA SSVC

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%
Exploitation100% × 40%
Automatability100% × 15%
CISA SSVC: Attend at low mission impact; Act at medium or high.
Action: A fix is available. Apply it sooner than your standard update timelines at low mission impact and as soon as possible at medium or high.
EPSS PROB
100%
EPSS %ILE
99th
KEV
⚠ Exploited

CISA SSVCAttend at low mission impact; Act at medium or high.

A fix is available. Apply it sooner than your standard update timelines at low mission impact and as soon as possible at medium or high.

Exploitation active (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

October 5, 2021

Last Modified

October 24, 2025

Advisory Details (8)

Auto-updated Oct 9, 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/
githubMentions a patch (unverified)

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 / EcosystemFix (by version range) / 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-0:6.2.2-7.el8_12021-10-12redhat
redhatgrafana-0:6.3.6-3.el8_22021-10-12redhat
redhatgrafana-0:7.3.6-3.el8_42021-10-12redhat

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 rangeFix by version rangeDependents
github.com/grafana/grafana—
  • every version up to 7.5.11: fixed in 7.5.11
  • 8.0.0 up to 8.1.6: fixed in 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 43× in last 7d / 201× 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 889 total refreshes for this CVE.

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

Public detection templates

(1 reference)

A public Nuclei detection template is referenced for this CVE. A detection template checks whether a system is affected; it is not necessarily exploit code.

  • Nucleihttp/cves/2021/CVE-2021-39226.yaml
    Published Dec 1, 2021

    Grafana Snapshot - Authentication Bypass

    Open source ↗

Related CVEs(same product + 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 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 attention. A fix is available. Apply it.
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 affected packages EchelonGraph has on record, with version ranges, are listed in the Affected Packages section of this page.
How do I remediate CVE-2021-39226?
A fix for CVE-2021-39226 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2021-39226 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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