Security Advisories on Grafana Labs

Auth Proxy IPv6 whitelist bypass

Wed, 13 May 2026 00:00:00 +0000

When using an IPv6 allow-list for the Auth Proxy feature, it defaults to /32 addresses. Addresses specifying a mask explicitly are not affected; to mitigate easily, add the desired mask (usually /128) to the addresses. Only auth proxy is affected; Okta, SAML, LDAP, etc are unaffected here.

This vulnerability was reported via our bug bounty program.

BAC in Snapshot API allows deletion of unauthorized dashboard snapshots

Wed, 13 May 2026 00:00:00 +0000

Any Editor could delete any snapshot, even if they have no access to read or write them.

This vulnerability was reported via our bug bounty program.

Dashboard Import Overwrites ACL — Editor Privilege Escalation to Dashboard Admin

Wed, 13 May 2026 00:00:00 +0000

An Editor can overwrite a dashboard not owned by them to acquire admin on that specific dashboard. The user must have write access to the dashboard to escalate privilege.

This vulnerability was reported via our bug bounty program.

Grafana Data Source Plugin: DoS (OOM) via Negative Interval Injection in $__timeGroup Macro

Wed, 13 May 2026 00:00:00 +0000

Using the $__timeGroup macro, one can achieve an OOM by overloading the server. This requires a SQL datasource. If the server is set up to auto-restart, the impact is minimal or non-existent, as the attack can take upwards of half an hour to crash the server.

This vulnerability was reported via our bug bounty program.

Grafana Live push endpoint allows unbounded memory allocation leading to OOM

Wed, 13 May 2026 00:00:00 +0000

The Grafana Live push endpoint can be exploited to cause unbounded memory allocation by sending a large or streaming request body, potentially leading to out-of-memory conditions. An authenticated user with access to the Grafana Live API can trigger this issue.

Grafana plugin resources can lead to unbounded memory allocation

Wed, 13 May 2026 00:00:00 +0000

A request to the Grafana plugin resources endpoint can cause unbounded memory allocation by reading the entire request body into memory. An authenticated user can exploit this to trigger an out-of-memory condition, potentially causing a denial of service.

IDOR in Annotations API allows unprivileged users to DELETE annotation

Wed, 13 May 2026 00:00:00 +0000

Editors could delete any annotation, even those they do not have read access to. The editor user cannot create or read the annotations.

This vulnerability was reported via our bug bounty program.

SQL Expressions Read File From Disk

Wed, 13 May 2026 00:00:00 +0000

A vulnerability in SQL Expressions allows an authenticated attacker to read arbitrary files from the Grafana server’s filesystem. Only instances with the sqlExpressions feature toggle enabled are vulnerable.

Users can generate Service Account tokens after permissions removal

Wed, 13 May 2026 00:00:00 +0000

When a user’s access to mint tokens for a service account is revoked, it is sometimes still possible to do so for a few seconds after the event. The user will eventually lose access to do this.

This vulnerability was reported via our bug bounty program.

Viewer-triggered race condition in Grafana Live leads to complete server crash

Wed, 13 May 2026 00:00:00 +0000

A race condition in Grafana Live allows authenticated users with Viewer role to trigger a server crash by sending concurrent requests that cause a fatal map access error. This results in complete service unavailability requiring restart of the Grafana server.

This vulnerability was reported via our bug bounty program.