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CVE-2026-81843

Memory exhaustion denial of service in Elasticsearch data source index patterns

Grafana is an open-source platform for monitoring and observability. When an Elasticsearch data source is configured with a time-based index pattern, Grafana generated one index name for every interval in the requested query time range without any upper limit. A user with permission to query the data source, which includes users holding only the Viewer role in a default configuration, could submit a single small query with an extreme time range and cause the server to allocate memory until it was terminated. The allocation occurred before any request was sent to Elasticsearch, so the condition applied whether or not the Elasticsearch cluster was reachable. Data sources configured with a static index name are not affected.

CVSS 3.1 · 6.5 Medium EPSS n/a KEV · Not listed
Vendors
Grafana
Products
Elasticsearch Datasource Grafana Grafana Enterprise
CVE-2026-107365

Unintended API access through the Google Cloud Monitoring data source resource proxy

A user with query access to a Google Cloud Monitoring data source can use its resource proxy to send requests to other Cloud Monitoring API paths with the data source's credentials, and read data from any project those credentials can reach. When the data source forwards the user's OAuth identity or uses Workload Identity Federation, the impact depends on that credential's permissions. Fixed in Google Cloud Monitoring plugin 12.6.7.

CVSS 4.0 · 5.3 Medium EPSS n/a KEV · Not listed
Vendors
Grafana
Products
Google Cloud Monitoring Datasource Grafana Grafana Enterprise
CVE-2026-106475

Elasticsearch data source resource proxy allows arbitrary methods and paths with the data source's credentials

The Elasticsearch data source resource proxy forwards the request method and path to Elasticsearch using the data source's own credentials, without restricting them to the operations the plugin needs. A user who can query the data source can alter index mappings or reach other indices on the cluster. [Improper authorization / path validation]

CVSS 3.1 · 7.1 High EPSS n/a KEV · Not listed
Vendors
Grafana
Products
Elasticsearch Datasource Grafana Grafana Enterprise
CVE-2026-14242

Authorization bypass in the Git Sync provisioning jobs API

A user with the Editor role could delete, move, push or pull Git Sync managed resources in folders where they only had view access, by creating a provisioning job through the jobs resource API, which skipped the folder permission checks (incorrect authorization).

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-82014

Team preferences RBAC bypass through the set-home-dash endpoint

Any authenticated user, including a Viewer, could change the preferences of any team, such as its home dashboard, theme and timezone, through an undocumented endpoint with no access control, and so redirect every member of that team to a dashboard of their choice (missing authorization).

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-13721

Folder authorization bypass in the Git Sync provisioning files API

A user with edit access to one folder could modify, move or delete Git Sync provisioned resources in folders where they only had view access, through the provisioning files API (incorrect authorization).

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-110289

Git Sync connections send credentials to unvalidated server URLs

A user with the Organization Admin role could point the server or token URL of a Git Sync connection at a loopback or internal address, and Grafana would then send the connection's OAuth client secret and tokens, or requests signed with the GitHub App private key, to that address (server-side request forgery).

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-102589

Cross-instance user impersonation through image renderer JWTs

When independent Grafana instances share the same [rendering] renderer_token, an image renderer key issued by one instance is accepted by the others, so a user on one instance could act as the user with the same ID on another (origin validation error). This affects instances with the renderAuthJWT feature toggle enabled, the default from Grafana 13.0.0.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-110992

Path traversal in Git Sync delete and move jobs

A user who can create Git Sync provisioning jobs (the Editor role by default) could delete or move files outside the configured repository path with a job that references a resource whose source path contains ../ sequences (path traversal). With a local filesystem repository on versions before 13.0.4 and 13.1.1, this reached files on the Grafana host.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-107509

Memory exhaustion denial of service in SQL Expressions

A user with the Viewer role can make Grafana allocate an unbounded amount of memory, and crash it, with a single SQL Expression query that casts a value to a very large BINARY length (memory allocation with excessive size value).

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-111000

Privilege escalation through folder move in the folders API

A user with the Editor role who can edit a folder can move it, through the folders resource API, under a folder they administer, and so gain Admin on the moved folder and its contents, including the right to change their permissions. The legacy folder move API refuses the same move (improper privilege management).

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-111024

Folder permission bypass in the Git Sync repository files API

A user with the Viewer or Editor role could bypass folder permissions on Git Sync managed resources through the repository files API: a Viewer could read files in folders they could not access, and an Editor could create, modify, move or delete provisioned dashboards and folders there (incorrect authorization).

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-9703

Viewer role can create, modify and delete Loki alerting rules

Grafana's data source proxy did not apply role-based access control to write requests forwarded to Loki data sources. A user holding only the Viewer role on an affected Grafana instance could send POST, PUT and DELETE requests through the proxy to the Loki rules API (/loki/api/v1/rules), allowing them to create, modify and delete Loki alerting rules. Because those rules are stored by Loki rather than by Grafana, the change took effect for every user of that Loki data source, not only for the Viewer who made the request. Exploitation requires an authenticated Viewer account on the Grafana instance and a configured Loki data source; no other privileges are needed. Both Grafana OSS and Grafana Enterprise are affected. The defect is in Grafana's data source proxy; Loki itself is not vulnerable and does not need to be patched.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-33379

Dashboard snapshot permission bypass

A user with any role, including Viewer or a service account with no permissions, can create, externally publish, and delete dashboard snapshots (missing authorization). Only Grafana OSS and Grafana Enterprise 12.4 are affected; earlier versions and Grafana 13 are not.

CVSS 3.1 · 8.5 High EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-93294

Azure Monitor data source resource proxy allows calls to arbitrary Azure Resource Manager APIs

A user with query access to an Azure Monitor data source can use its resource proxy to call Azure Resource Manager APIs beyond those Grafana needs, with the data source's Azure identity (unintended proxy). The impact is bounded by the Azure role granted to that identity.

CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-15577

Git Sync connection configuration can be modified with read-only access

A user or service account with read-only access to Git Sync (provisioning) connections can modify a connection's configuration through its status subresource (incorrect authorization). On Grafana 12.4 the affected API is only available when the experimental provisioning feature toggle is enabled.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-33374

Unbounded memory allocation in the Prometheus rule conversion API

The Prometheus rule conversion API endpoints in Grafana do not limit request body size, allowing authenticated users to trigger unbounded memory allocations that can crash the server through out-of-memory conditions.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-88967

Azure Monitor access token disclosure via SSRF

A user with query access to an Azure Monitor data source in Grafana can cause server-side requests to an attacker-controlled endpoint that disclose the data source's Azure access token (server-side request forgery).

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-88858

Server-side expression parser denial of service

A user with the Viewer role in Grafana can crash the server by submitting a crafted server-side math expression (uncontrolled recursion). A user with permission to provision alert rules can make the outage persist across restarts.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Grafana Enterprise
CVE-2026-103506

SSO settings authorization bypass

An authenticated user in Grafana can read SSO client secrets and modify instance-wide SSO settings without the required permissions (missing authorization). This affects Grafana OSS and Enterprise 13.2 installations with the experimental kubernetesSsoSettingsApi feature toggle enabled, which is disabled by default.

CVSS 4.0 · 8.9 High EPSS < 1% KEV · Not listed
Vendors
Grafana Redhat
Products
Grafana Grafana Enterprise Hummingbird