CVE-2021-43813

Grafana is an open-source platform for monitoring and observability. Grafana prior to versions 8.3.2 and 7.5.12 contains a directory traversal vulnerability for fully lowercase or fully uppercase .md files. The vulnerability is limited in scope, and only allows access to files with the extension .md to authenticated users only. Grafana Cloud instances have not been affected by the vulnerability. Users should upgrade to patched versions 8.3.2 or 7.5.12. For users who cannot upgrade, running a reverse proxy in front of Grafana that normalizes the PATH of the request will mitigate the vulnerability. The proxy will have to also be able to handle url encoded paths. Alternatively, for fully lowercase or fully uppercase .md files, users can block /api/plugins/.*/markdown/.* without losing any functionality beyond inlined plugin help text.

• CWE-22
• CWE-22

• http://www.openwall.com/lists/oss-security/2021/12/10/4Mailing List, Patch, Release Notes, Third Party Advisory
• https://github.com/github/securitylab-vulnerabilities/commit/689fc5d9fd665be4d5bba200a6a433b532172d0fBroken Link
• https://github.com/grafana/grafana/commit/fd48aee61e4328aae8d5303a9efd045fa0ca308dPatch, Third Party Advisory
• https://github.com/grafana/grafana/security/advisories/GHSA-c3q8-26ph-9g2qPatch, Release Notes, Third Party Advisory
• https://grafana.com/blog/2021/12/10/grafana-8.3.2-and-7.5.12-released-with-moderate-severity-security-fix/Patch, Release Notes, Vendor Advisory
• https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-12/Release Notes, Vendor Advisory
• https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-3-2/Release Notes, Vendor Advisory
• https://security.netapp.com/advisory/ntap-20220107-0006/Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/12/10/4Mailing List, Patch, Release Notes, Third Party Advisory
• https://github.com/github/securitylab-vulnerabilities/commit/689fc5d9fd665be4d5bba200a6a433b532172d0fBroken Link
• https://github.com/grafana/grafana/commit/fd48aee61e4328aae8d5303a9efd045fa0ca308dPatch, Third Party Advisory
• https://github.com/grafana/grafana/security/advisories/GHSA-c3q8-26ph-9g2qPatch, Release Notes, Third Party Advisory
• https://grafana.com/blog/2021/12/10/grafana-8.3.2-and-7.5.12-released-with-moderate-severity-security-fix/Patch, Release Notes, Vendor Advisory
• https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-12/Release Notes, Vendor Advisory
• https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-3-2/Release Notes, Vendor Advisory
• https://security.netapp.com/advisory/ntap-20220107-0006/Third Party Advisory

Published

Dec 10, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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