CVE-2021-39226

Aliases:GHSA-69j6-29vr-p3j9BIT-grafana-2021-39226
Advisory lineage Upstream: 0 Downstream: 15
Analyzed
Published: 05 Oct 2021, 17:30
Last modified:21 Oct 2025, 23:25

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (cve.org)
EPSS Score
94.35% CRITICAL
94% probability 0.00%
KEV
Listed
CISA
1 listing
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

05 Oct 2021, 17:30
Published
Vulnerability first disclosed
25 Aug 2022, 00:00
Added to CISA KEV
Grafana Authentication Bypass Vulnerability
15 Sept 2022, 00:00
CISA Remediation Due
Apply updates per vendor instructions.
21 Oct 2025, 23:25
Last Modified
Vulnerability information updated

Description

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 Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • v3.1•HIGH•Score: 7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
  • v3.1•HIGH•Score: 7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:H
  • v2.0•MEDIUM•Score: 6.8AV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 94.35%• Percentile: 100%

Techniques & Countermeasures

  • CWE-862•Missing Authorization

    The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

  • CWE-287•Improper Authentication

    When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected Systems

  • fedoraproject•fedora

    34 | 35

  • github.com/grafana•grafana

    < 7.5.11 | ≥ 8.0.0, < 8.1.6

  • grafana•grafana

    ≥ 8.0.0, < 8.1.6 | < 7.5.11

References (18)