Authentication bypass for viewing and deletions of snapshots

Exploitation

Confirmed: listed in the CISA Known Exploited Vulnerabilities catalog.

CVSS

7.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:H

EPSS

• CVE-2021-39226: 99.93% estimated exploitation activity in the next 30 days; percentile 99.97 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Today we are releasing Grafana 7.5.11, and 8.1.6. These patch releases include an important security fix for an issue that affects all Grafana versions from 2.0.1. Grafana Cloud instances have already been patched and an audit did not find any usage of this attack vector. Grafana Enterprise customers were provided with updated binaries under embargo. 8.1.5 contained a single fix for bar chart panels. We believe that users can expedite deployment by moving from 8.1.4 to 8.1.6 directly. CVE-2021-39226 Snapshot authentication bypass Summary CVSS Score: 9.8 Critical CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H We received a security report to security@grafana.com on 2021-09-15 about a vulnerability in Grafana regarding the snapshot feature. It was later identified as affecting Grafana versions from 2.0.1 to 8.1.6. CVE-2021-39226 has been assigned to this vulnerability. Impact Unauthenticated and authenticated users are able to view the snapshot with the lowest database key by accessing…

Published by the source

5 Oct 2021, 20:24 UTC

Last modified by the source

22 Oct 2025, 19:08 UTC

Source last checked

26 Oct 2026, 15:13 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-69j6-29vr-p3j9

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# Patch Next advisory brief: CVE-2021-39226

Advisory: Authentication bypass for viewing and deletions of snapshots
IDs: CVE-2021-39226, GHSA-69j6-29vr-p3j9
Record: https://patchnext.com/advisories/cve-2021-39226 (revision 1, source checked 26 Oct 2026, 15:13 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.3)
Exploitation: confirmed: listed in the CISA Known Exploited Vulnerabilities catalog.
Vendor response: Vendor fix available; fixed versions by package: github.com/grafana/grafana 8.1.6, 7.5.11. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/grafana/grafana: affected < 7.5.11; >= 8.0.0, < 8.1.6; fixed in 8.1.6, 7.5.11

## Suggested inspection (read-only)
- Go github.com/grafana/grafana: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/grafana/grafana.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-69j6-29vr-p3j9 (GitHub-reviewed advisory GHSA-69j6-29vr-p3j9 lists affected ranges: Go github.com/grafana/grafana >=0 =8.0.0 <8.1.6)
- Verified: https://www.cisa.gov/known-exploited-vulnerabilities-catalog (CISA added CVE-2021-39226 to the Known Exploited Vulnerabilities catalog on 2022-08-25.)

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