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Grafana patched CVE-2026-19516, a critical SSRF vulnerability with a CVSS score of 9.1 in the Grafana MCP server's grafana_api_request tool. The flaw allowed callers to control outbound HTTP requests through a supplied X-Grafana-URL header, potentially reaching internal services accessible from the MCP server and reading their responses. In tested deployments, the issue could expose sensitive data such as AWS IMDSv2 credentials.
Researchers also found that attacker-generated values matching the expected session-ID format could bypass session validation and invoke MCP tools, including tools/list and tools/call, without authentication under the configured Grafana service account. Grafana addressed both issues in version 1.1.0 by fixing the SSRF condition and adding optional bearer-token authentication; operators should enforce authentication on remote MCP deployments, restrict service-account privileges, and apply strict outbound destination filtering.
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3 events from the most recent confirmed update back to the earliest known activity.
Grafana MCP version 1.1.0 fixed CVE-2026-19516 and introduced optional bearer-token authentication to prevent unauthenticated tool execution when configured.
Pillar Security reported CVE-2026-19516, a CVSS 9.1 SSRF flaw in the grafana_api_request tool. Caller-controlled X-Grafana-URL values could cause the MCP server to issue requests to internal destinations and return their responses; testing demonstrated possible AWS IMDSv2 credential retrieval in certain deployments.
Pillar Security found that Grafana MCP accepted locally generated session-shaped IDs based on format rather than validating issued credentials, allowing unauthenticated callers to invoke MCP tools using the configured Grafana service account.
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A newly disclosed server-side request forgery flaw, **CVE-2026-19516**, affects **Grafana MCP Server** and **mcp-grafana** in versions **prior to or equal to `1.0.0`**. The vulnerability allows a caller-controlled `X-Grafana-URL` header to steer outbound requests to attacker-chosen destinations, while the `grafana_api_request` tool lets the caller select the HTTP method, path, and body. That combination can be abused to reach internal, loopback, and link-local services, including cloud metadata endpoints, and read back the responses. The issue remains exploitable despite an earlier fix for **CVE-2026-15583**, which prevented the configured Grafana service-account token from being sent to unintended destinations but did not restrict where requests could be sent. The **Canadian Centre for Cyber Security** issued advisory **AV26-796**, warning that Grafana products are affected and urging administrators to review vendor guidance and apply updates when available.
Aug 14, 2026
Grafana published security advisories for two products, including **CVE-2026-15583** in **Grafana MCP Server** and a separate unbounded memory allocation issue in **Grafana Loki**. The MCP Server flaw affects version `0.17.1` and earlier and stems from a confused-deputy **SSRF** condition triggered through the `X-Grafana-URL` header. An unauthenticated remote attacker can use the bug to exfiltrate the server’s environment-configured Grafana service-account token and force requests to arbitrary internal services. The SSRF exposure also extends to sensitive internal targets such as cloud metadata endpoints, raising the risk of credential theft and internal network access without user interaction. Grafana’s Loki advisory covers version `3.7.0` and earlier, where detected_fields query limits can cause unbounded memory allocation. Government and security notices have urged administrators to review Grafana’s advisories and apply the vendor’s updates for affected MCP Server and Loki deployments.
Jul 16, 2026
**CVE-2020-13379** is a server-side request forgery (SSRF) flaw in Grafana’s avatar-processing functionality that can cause a vulnerable Grafana server to make attacker-directed HTTP requests. The issue affects Grafana versions from 3.0.1 through 7.0.1 and was addressed in versions 7.0.2 and 6.7.4. Exploitation can turn an internet-exposed Grafana deployment into an internal-network proxy, allowing requests to services otherwise inaccessible to the attacker. On Amazon EC2, the flaw can be used to target the link-local Instance Metadata Service at `169.254.169.254`, including metadata paths that disclose instance configuration and IAM-role credentials, as well as instance user data. Organizations running affected Grafana versions on EC2 should upgrade, restrict Grafana’s outbound network access, and require IMDSv2 to reduce exposure to metadata-service SSRF attacks.
Sep 3, 2026