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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.
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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 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.
Sep 4, 2026
Grafana issued urgent patches for two high-severity vulnerabilities, including **`CVE-2026-27876`**, a critical flaw in the SQL Expressions feature that can allow an attacker with **Viewer** privileges or higher to write arbitrary files to the server and potentially escalate to full **remote code execution**. The issue can be chained into broader compromise scenarios, including unauthorized SSH access, prompting public warnings from national defenders such as Belgium’s CCB to patch immediately. Grafana also fixed **`CVE-2026-27880`**, which affects OpenFeature validation endpoints and allows **unauthenticated** attackers to crash vulnerable instances by sending oversized requests that exhaust memory. Grafana Labs said patched releases, including **12.4.2**, are available and noted that **Amazon Managed Grafana** and **Azure Managed Grafana** were already protected under embargo; for temporary mitigation, administrators were advised to disable the `sqlExpressions` feature toggle and use highly available deployments and reverse proxies such as **Nginx** or **Cloudflare** to restrict request sizes.
Jun 29, 2026