What is CVE-2021-39226?

CVE-2021-39226 is a critical-severity vulnerability in Grafana, classified under Improper Authentication. CVSS score: 9.8/10. Published 2021-10-05.

How severe is CVE-2021-39226?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-39226 known to be exploited?

Yes. CVE-2021-39226 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-08-25), indicating it is being actively exploited. 12 public proof-of-concept repositories are indexed.

Auth bypass in Grafana

CVE-2021-39226

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 /ap…

Vulnerability class: Broken Authentication

EPSS: 0.944 (100.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Grafana — versions >= 8.0.0, < 8.1.6, < 7.5.11

Weakness classification (CWE)

CWE-287 — Improper Authentication

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-08-25. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-09-15.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

github.com/grafana/grafana/security/advisories/GHSA-69j6-29vr-p3j9 (x_refsource_CONFIRM)
github.com/grafana/grafana/commit/2d456a6375855364d098ede379438bf7f0667269 (x_refsource_MISC)
grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-11/ (x_refsource_MISC)
grafana.com/docs/grafana/latest/release-notes/release-notes-8-1-6/ (x_refsource_MISC)
[oss-security] 20211005 CVE-2021-39226 Grafana snapshot authentication bypass (mailing-list, x_refsource_MLIST)
FEDORA-2021-dd83dc8b0b (vendor-advisory, x_refsource_FEDORA)
security.netapp.com/advisory/ntap-20211029-0008/ (x_refsource_CONFIRM)
FEDORA-2021-01588ab0bf (vendor-advisory, x_refsource_FEDORA)

Frequently asked questions

What is CVE-2021-39226?: CVE-2021-39226 is a critical-severity vulnerability in Grafana, classified under Improper Authentication. CVSS score: 9.8/10. Published 2021-10-05.
How severe is CVE-2021-39226?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-39226 known to be exploited?: Yes. CVE-2021-39226 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-08-25), indicating it is being actively exploited. 12 public proof-of-concept repositories are indexed.