Grafana Oss vulnerabilities

CVE-2026-33381 [HIGH] CWE-284 CVE-2026-33381: When a user's access to mint tokens for a service account is revoked, it is sometimes still possible 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.

CVE-2026-42127 [HIGH] CWE-400 CVE-2026-42127: The public dashboard query endpoint does not limit request body size before processing, allowing una 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 token or authentication is required to exploit this vulnera

CVE-2026-42129 [HIGH] CWE-22 CVE-2026-42129: A user with Viewer permissions can use a path traversal in the Loki data source plugin to reach admi 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.

CVE-2026-33376 [HIGH] CWE-1188 CVE-2026-33376: When using an IPv6 allow-list for the Auth Proxy feature, it defaults to /32 addresses. Addresses sp 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.

CVE-2026-33380 [MEDIUM] CWE-552 CVE-2026-33380: A vulnerability in SQL Expressions allows an authenticated attacker to read arbitrary files from the 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.

CVE-2026-8609 [HIGH] CWE-400 CVE-2026-8609: An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, caus 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).

CVE-2026-33382 [HIGH] CWE-400 CVE-2026-33382: Several Grafana API endpoints, some of them unauthenticated, do not limit the size of the request bo 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.

CVE-2026-17183 [HIGH] CWE-863 CVE-2026-17183: An authenticated user with permission to create or edit alert rules can bypass datasource query auth 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 datasource credentials to users who lack permission to q

CVE-2026-19197 [MEDIUM] CWE-862 CVE-2026-19197: A user with organization administrator permissions can delete dashboard snapshots belonging to other 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).

CVE-2026-33377 [HIGH] CWE-287 CVE-2026-33377: An Editor can overwrite a dashboard not owned by them to acquire admin on that specific dashboard. T 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.

CVE-2026-17033 [MEDIUM] CWE-79 CVE-2026-17033: An authenticated attacker with Editor access or alert.instances.external:write can submit an externa An authenticated attacker with Editor access or alert.instances.external:write can submit an external Alertmanager alert containing a controlled generatorURL. The attacker is authorized to create the alert, but not to execute script in another user's Grafana session. Grafana renders alert.generatorURL directly as the Alert Details See source LinkBut

CVE-2026-33375 [MEDIUM] CWE-400 CVE-2026-33375: The Grafana MSSQL data source plugin contains a logic flaw that allows a low-privileged user (Viewer 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.

CVE-2026-28376 [MEDIUM] CWE-770 CVE-2026-28376: The Grafana Live push endpoint can be exploited to cause unbounded memory allocation by sending a la 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.

CVE-2026-28380 [MEDIUM] CWE-862 CVE-2026-28380: Any Editor could delete any snapshot, even if they have no access to read or write them. Any Editor could delete any snapshot, even if they have no access to read or write them.

CVE-2026-33378 [MEDIUM] CWE-400 CVE-2026-33378: Using the $__timeGroup macro, one can achieve an OOM by overloading the server. This requires a SQL 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.

CVE-2026-11817 [MEDIUM] CWE-863 CVE-2026-11817: This vulnerability only affects Grafana stacks configured with multiple organizations; single-organi 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 /api/access-control/users/permissions/search?actionPrefix=dashboards: and receive permission data belonging to other o

CVE-2026-28379 [MEDIUM] CWE-362 CVE-2026-28379: A race condition in Grafana Live allows authenticated users with Viewer role to trigger a server cra 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.

CVE-2026-28383 [MEDIUM] CWE-770 CVE-2026-28383: A request to the Grafana plugin resources endpoint can cause unbounded memory allocation by reading 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.

CVE-2026-21723 [MEDIUM] CWE-400 CVE-2026-21723: The alertmanager templates test endpoint (/api/alertmanager/grafana/config/api/v1/templates/test) ca 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 anonymous access enabled.

CVE-2026-9029 [MEDIUM] CWE-79 CVE-2026-9029: A user with Editor permissions can place a malicious script in the attribution field of a Geomap pan 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).