CVE-2021-39226

9.8 CRITICAL CISA KEV - Actively Exploited
Published: October 05, 2021 Modified: October 24, 2025

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/05/4
Source: security-advisories@github.com
Mailing List Third Party Advisory
https://github.com/grafana/grafana/security/advisories/GHSA-69j6-29vr-p3j9
Source: security-advisories@github.com
Exploit Mitigation Vendor Advisory
https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-11/
Source: security-advisories@github.com
Release Notes
https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-1-6/
Source: security-advisories@github.com
Release Notes
https://security.netapp.com/advisory/ntap-20211029-0008/
Source: security-advisories@github.com
Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/05/4
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
https://github.com/grafana/grafana/security/advisories/GHSA-69j6-29vr-p3j9
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Mitigation Vendor Advisory
https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-11/
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-1-6/
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://security.netapp.com/advisory/ntap-20211029-0008/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-39226
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

17 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
94.3%
100th percentile
Exploitation Status
Actively Exploited
Remediation due: 2022-09-15

Weaknesses (CWE)

Affected Vendors

fedoraproject grafana