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.

• CWE-287
• CWE-862

• 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

Published

Oct 5, 2021

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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