Grafana MCP server-side request forgery via X-Grafana-URL header (grafana_api_request)

A caller who can invoke the grafanaapirequest tool can supply an X-Grafana-URL request header to control the destination of mcp-grafana’s outbound requests, and can also choose the HTTP method, path, and body. Because the destination isn’t restricted to the configured Grafana instance, the caller...

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...

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...

Loki detected_fields query limits results in unbounded memory allocation

The Loki detectedfields endpoint allocates 2limit elements in slices and maps based on the user-supplied limit query parameter, regardless of actual result count. A massive limit value e.g. 600000000 allocates 20-30 GiB even with zero matching results, causing OOM, resulting in denial of service...

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...

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...

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...

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...

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...

Path traversal in the Loki data source leads to internal information disclosure

A user with Viewer permissions can use a path traversal in the Loki data source plugin to reach administrative Loki endpoints and read sensitive backend configuration and internal service information. Upgrade to a fixed version listed below...

Grafana denial of service via oversized request bodies (web.Bind)

Several Grafana API endpoints, some of them unauthenticated, do not limit the size of the request body before processing it. An attacker can send very large payloads that force excessive memory allocation, potentially exhausting memory and causing a denial of service. Upgrade to a fixed version...

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...

Auth Proxy IPv6 whitelist bypass

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...

Grafana plugin resources can lead to unbounded memory allocation

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...

SQL Expressions Read File From Disk

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

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...

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

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...

Grafana Live push endpoint allows unbounded memory allocation leading to OOM

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...

IDOR in Annotations API allows unprivileged users to DELETE annotation

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

Dashboard Import Overwrites ACL — Editor Privilege Escalation to Dashboard Admin

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...

BAC in Snapshot API allows deletion of unauthorized dashboard snapshots

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

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

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...

Local File Read/Write to Potential Privilege Escalation via Snowflake GET/PUT

The Snowflake datasource allows for GET/PUT commands, which can allow any user with access to run queries against the data source to read/write files between the local grafana server and the connected Snowflake host...

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...

Query resampling can cause unbounded memory allocations

A resample query can be used to trigger out-of-memory crashes in Grafana...

Grafana Testdata datasource can issue unbounded memory allocations

A testdata data-source can be used to trigger out-of-memory crashes in Grafana...

OpenFeature evaluation API reads input data with no bounds

The OpenFeature feature toggle evaluation endpoint reads unbounded values into memory, which can cause out-of-memory crashes...

Public dashboards discloses all direct mode datasources

When using public dashboards and direct data-sources, all direct data-sources’ passwords are exposed despite not being used in dashboards. No passwords of proxied data-sources are exposed. We encourage all direct data-sources to be converted to proxied data-sources as far as possible to improve...

RCE on Grafana via sqlExpressions

A chained attack via SQL Expressions and a Grafana Enterprise plugin can lead to a remote arbitrary code execution impact RCE. This is enabled by a feature in Grafana OSS, so all users are always recommended to update to avoid future attack vectors going this path. Only instances with the...

Missing Protected-field Authorization in Provisioning Contact Points API

A vulnerability has been discovered in Grafana OSS where an authorization bypass in the provisioning contact points API allows users with Editor role to modify protected webhook URLs without the required alert.notifications.receivers.protected:write permission...

Grafana MSSQL Data Source Plugin: Restriction Bypass Leading to OOM DoS

The Grafana MSSQL data source plugin contains a logic flaw that allows a low-privileged user Viewer to bypass API restrictions and trigger a catastrophic Out-Of-Memory OOM memory exhaustion, crashing the host container. Thanks to khanmarshal for reporting this vulnerability to us via our bug boun...

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...

S3 SSE-C Encryption Key Exposed in Plaintext via Config Endpoint

A vulnerability in Grafana Tempo exposes the S3 SSE-C encryption key in plaintext through the /status/config endpoint, potentially allowing unauthorized users to obtain the key used to encrypt trace data stored in S3. Thanks to williamgoodfellow for reporting this vulnerability...

Authorization bypass in Grafana datasource deletion

A time-of-create-to-time-of-use TOCTOU vulnerability lets recently deleted-then-recreated data sources be re-deleted without permission to do so. This requires several very stringent conditions to be met: The attacker must have admin access to the specific datasource prior to its first deletion...

XSS in Grafana Explore stack trace

Stack traces in Grafana’s Explore Traces view can be rendered as raw HTML, and thus inject malicious JavaScript in the browser. This would require malicious JavaScript to be entered into the stack trace field. Only datasources with the Jaeger HTTP API appear to be affected; Jaeger gRPC and Tempo ...

Public Dashboards time range restriction on annotations can be bypassed

Public dashboards with annotations enabled did not limit their annotation timerange to the locked timerange of the public dashboard. This means one could read the entire history of annotations visible on the specific dashboard, even those outside the locked timerange. This did not leak any...

Cross-Tenant Legacy Correlation Disclosure and Deletion

A cross-tenant isolation vulnerability was found in Grafana’s Correlations feature affecting legacy correlation records. Due to a backward compatibility condition allowing orgid = 0 records to be returned across organizations, a user with datasource management privileges could read and permanentl...

Cross-dashboard privilege escalation via permission management

Grafana is an open-source platform for monitoring and observability. The platform supports creating dashboards, which collate various visualisation panels onto one plane. These can have per-user permissions. If a user has permission management rights on one dashboard, they could edit the...

Unauthenticated DoS in avatar cache in Grafana

Grafana is an open-source platform for monitoring and observability. The platform supports users having their own avatars, which can be sourced from the Gravatar service API. This uses a cache, to ensure that we don’t overload the service. If these requests time out after 3 seconds, a Goroutine i...

Grafana Loki Path Traversal - CVE-2021-36156 Bypass

The CVE-2021-36156 fix validates the namespace parameter for path traversal sequences after a single URL decode, by double encoding, an attacker can read files at the Ruler API endpoint /loki/api/v1/rules/namespace Thanks to Prasanth Sundararajan for reporting this vulnerability...

Exposure of Storage Secret in Pyroscope

Pyroscope is an open-source continuous profiling database. The database supports various storage backends, including Tencent Cloud Object Storage COS. If the database is configured to use Tencent COS as the storage backend, an attacker could extract the secretkey configuration value from the...

Information Leakage in Grafana Alerting

In Grafana’s alerting system, users with edit permissions for a contact point, specifically the permissions “alert.notifications:write” or “alert.notifications.receivers:test” that are granted as part of the fixed role “Contact Point Writer”, which is part of the basic role Editor - can edit...

Incorrect privilege assignment

SCIM provisioning was introduced in Grafana Enterprise and Grafana Cloud in April to improve how organizations manage users and teams in Grafana by introducing automated user lifecycle management. In Grafana versions 12.x where SCIM provisioning is enabled and configured, a vulnerability in user...

CVE-2025-41116

Grafana is an open-source platform for monitoring and observability. The Grafana-Databricks-Datasource is a plugin allowing Grafana to visualize data from Databricks Enterprise Versions between 1.6.0 and 1.12.0 are vulnerable to a bug when Oauth passthrough is enabled, and multiple users are usin...

CVE-2025-3717

Grafana is an open-source platform for monitoring and observability. The Grafana-Snowflake-Datasource is a plugin allowing Grafana to visualize data from Snowflake Versions between 1.5.0 and 1.14.0 are vulnerable to a bug when Oauth passthrough is enabled, and multiple users are using the same...

Arbitrary Code Execution in Grafana Image Renderer Plugin

Grafana Image Renderer is vulnerable to remote code execution due to an arbitrary file write vulnerability. This is due to the fact that the /render/csv endpoint lacked validation of the filePath parameter that allowed an attacker to save a shared object to an arbitrary location that is then load...

Regex DoS in Zabbix Plugin in Grafana

Grafana is an open-source platform for monitoring and observability. Grafana-Zabbix is a plugin for Grafana allowing to visualize monitoring data from Zabbix and create dashboards for analyzing metrics and realtime monitoring. Versions 5.2.1 and below contained a ReDoS vulnerability via...

SSRF in Infinity Datasource Plugin

Grafana is an open-source platform for monitoring and observability. The Infinity datasource plugin, maintained by Grafana Labs, allows visualizing data from JSON, CSV, XML, GraphQL, and HTML endpoints. If the plugin was configured to allow only certain URLs, an attacker could bypass this...