CVE-2021-39226Grafana Authentication Bypass Vulnerability

BOD 26-04 remediation window

With CISA's SSVC answers for this CVE (automatable: yes, technical impact: total), BOD 26-04 Table 1 gives 3 days and forensic triage on a publicly exposed asset (row 1) and 3 days and forensic triage on an asset that is not publicly exposed (row 9) ^S06. The catalogue due date, 21 days after the date added, was set before BOD 26-04 took effect on 10 June 2026 ^S06. The directive binds US federal civilian executive branch agencies only.

What CISA says

Short description

Grafana contains an authentication bypass vulnerability that allows authenticated and unauthenticated users to view and delete all snapshot data, potentially resulting in complete snapshot data loss.

Required action

Apply updates per vendor instructions.

Notes

https://grafana.com/blog/2021/10/05/grafana-7.5.11-and-8.1.6-released-with-critical-security-fix/; https://nvd.nist.gov/vuln/detail/CVE-2021-39226

CWE in the catalogue

CWE-287

Official links

• CISA KEV catalogue entry cisa.gov
• NVD record nvd.nist.gov

Vendor advisory and patch links

References NVD tags Vendor Advisory or Patch, exactly as NVD lists them.

• https://github.com/grafana/grafana/commit/2d456a6375855364d098ede379438bf7f0667269 Patch
• https://github.com/grafana/grafana/security/advisories/GHSA-69j6-29vr-p3j9 Exploit, Mitigation, Vendor Advisory

Links in CISA's notes

• https://grafana.com/blog/2021/10/05/grafana-7.5.11-and-8.1.6-released-with-critical-security-fix/
• https://nvd.nist.gov/vuln/detail/CVE-2021-39226

NVD details

CWE (NVD)

CWE-287 by security-advisories@github.com, CWE-862 by nvd@nist.gov

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS versions in NVD

V2, V31

Last modified in NVD

2026-06-17T04:03:21.130

Where each value comes from

This product uses data from the NVD API but is not endorsed or certified by the NVD. CISA does not endorse Sysprobs. Methodology.