clickhouse-datasource silently drops TLS over PDC

When the ClickHouse plugin uses Native protocol the default with PDC or secure SOCKS, it asks for TLS but the connection library ignores that and talks to ClickHouse in the clear. Username, password, queries, and results can be read on the hop after the proxy. The server certificate is never...

Stored XSS in the Geomap panel tile-layer attribution

A user with Editor permissions can place a malicious script in the attribution field of a Geomap panel’s XYZ tile layer via a template variable. The script then executes in the browser of any user who views the affected dashboard stored cross-site scripting. Upgrade to a fixed version listed belo...

Broken access control in dashboard snapshots

A user with organization administrator permissions can delete dashboard snapshots belonging to other organizations on the same Grafana instance, and can recover a snapshot’s secret delete key using only its public share key broken access control...

DoS Vulnerability in Templates Test endpoint

The alertmanager templates test endpoint /api/alertmanager/grafana/config/api/v1/templates/test can execute templates with no memory limits. Mass-executing templates in a short period causes OOM and crashes the Grafana service. The endpoint requires very low privileges and is exploitable with...

SearchUsersPermissions returns cross-org users

This vulnerability only affects Grafana stacks configured with multiple organizations; single-organization deployments are not impacted. In a multi-organization stack, a user who is an Org Admin of a single organization can call GET...

Path traversal in the Tempo and Loki data source plugins

A user with Viewer permissions can use specially crafted requests to the Tempo and Loki data source plugins to reach unintended backend endpoints. Depending on the backend configuration this can expose data source credentials, leak internal responses, or trigger administrative actions on the...

Pre-authentication denial of service in the OAuth login route

An unauthenticated attacker can repeatedly call Grafana’s OAuth login route with unique values, causing unbounded memory growth that can eventually exhaust memory and crash the Grafana instance denial of service. Upgrade to a fixed version listed below...

Stored XSS in the table panel (TableNG)

A user with Editor permissions can craft a dashboard whose table TableNG panel contains a malicious field name that executes as a script in the browser of any user who views the dashboard stored cross-site scripting. Upgrade to a fixed version listed below...

Pre-authentication denial of service in the public dashboard query handler

The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger excessive memory allocation by sending arbitrarily large JSON payloads. This can lead to denial of service through memory exhaustion. No valid dashboard access tok...

Cross-Organization Public Dashboard Deletion via Missing Org Isolation

The public dashboard deletion endpoint does not enforce organization isolation, allowing an Org Admin in one organization to delete public dashboards belonging to a different organization by supplying the target dashboard’s identifiers...

Tempo denial of service via TraceQL exemplars hint (TraceQL query execution)

A TraceQL query in Grafana Tempo with a large exemplars hint value can cause the Tempo instance to allocate an excessive amount of memory, resulting in an out-of-memory crash. This could allow an authenticated user to trigger a denial of service against the Tempo service. Tempo OSS is fixed in...

CVE-2026-15583

A vulnerability has been discovered in the mcp-grafana project https://github.com/grafana/mcp-grafana where a confused-deputy flaw allows an unauthenticated remote attacker to exfiltrate the server’s environment-configured Grafana service-account token by supplying a crafted X-Grafana-URL request...

Tempo query limit results in unbounded memory allocation

If an attacker can submit Tempo queries with large limits, they can trigger unbounded memory allocations, which can impact the availability of the service. As a mitigation, set maxresultlimit in the search configuration for example, 262144 / 2^18 . Alternatively, automatically restart the service...

Grafana Alerting: Datasource query authorization bypass via spoofed queryType

An authenticated user with permission to create or edit alert rules can bypass datasource query authorization by marking an alert rule query as a server-side expression while referencing a real datasource UID incorrect authorization. This can expose data accessible through Grafana’s configured...

Geomap MapLibre XSS

A stored cross-site scripting vulnerability in the Geomap panel’s MapLibre base layer allows a user with the Editor role to execute arbitrary JavaScript in another user’s session by hosting a malicious style configuration, enabling escalation to Org Admin...

Operator - Namespaced User Path Traversal

We have released version 5.24.0 of the Grafana Operator. This patch includes a MEDIUM severity security fix for a path traversal/privilege escalation vulnerability in the Grafana Operator. Summary The Grafana Operator supports loading dashboards & library panels using the jsonnet data templating...

Grafana Plugin Extraction Zip Slip

Grafana OSS and Grafana Enterprise did not safely resolve symbolic links when extracting plugin archives. A crafted plugin archive can chain relative symbolic link entries to escape the plugin installation directory, writing arbitrary files and an executable backend binary outside that directory...