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...

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.

Metrics

CVSS 3.1

7.3/10

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

EPSS Probability

99.89%

100.0th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Sep 15, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Grafana	Grafana	< 7.5.11
Grafana	Grafana	>= 8.0.0, < 8.1.6
Fedoraproject	Fedora	34
Fedoraproject	Fedora	35

References

http://www.openwall.com/lists/oss-security/2021/10/05/4Mailing List, Third Party Advisory
https://github.com/grafana/grafana/commit/2d456a6375855364d098ede379438bf7f0667269Patch
https://github.com/grafana/grafana/security/advisories/GHSA-69j6-29vr-p3j9Exploit, Mitigation, Vendor Advisory
https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-11/Release Notes
https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-1-6/Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DCKBFUSY6V4VU5AQUYWKISREZX5NLQJT/Broken Link
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E6ANHRDBXQT6TURLP2THM26ZPDINFBEG/Broken Link
https://security.netapp.com/advisory/ntap-20211029-0008/Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/05/4Mailing List, Third Party Advisory
https://github.com/grafana/grafana/commit/2d456a6375855364d098ede379438bf7f0667269Patch
https://github.com/grafana/grafana/security/advisories/GHSA-69j6-29vr-p3j9Exploit, Mitigation, Vendor Advisory
https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-11/Release Notes
https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-1-6/Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DCKBFUSY6V4VU5AQUYWKISREZX5NLQJT/Broken Link
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E6ANHRDBXQT6TURLP2THM26ZPDINFBEG/Broken Link
https://security.netapp.com/advisory/ntap-20211029-0008/Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-39226US Government Resource

Timeline

Published: Oct 5, 2021
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is 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 /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.

How severe is CVE-2021-39226?

CVE-2021-39226 has a CVSS score of 7.3/10 (HIGH severity). The EPSS model estimates a 99.89% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2021-39226?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.