CVE-2026-32117 in grafanacubism-panel
Summary
by MITRE • 03/12/2026
The grafanacubism-panel plugin allows use of cubism.js in Grafana. In 0.1.2 and earlier, the panel's zoom-link handler passes a dashboard-editor-supplied URL directly to window.location.assign() / window.open() with no scheme validation. An attacker with dashboard Editor privileges can set the link to a javascript: URI; when any Viewer drag-zooms on the panel, the payload executes in the Grafana origin.
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Analysis
by VulDB Data Team • 03/19/2026
The vulnerability identified as CVE-2026-32117 resides within the grafanacubism-panel plugin for Grafana, a widely used open-source platform for data visualization and monitoring. This particular issue affects versions 0.1.2 and earlier of the plugin, which integrates cubism.js to provide time-series visualization capabilities. The core problem emerges from the plugin's implementation of zoom-link handling functionality within the dashboard editor interface, creating a critical security gap that can be exploited by malicious actors with specific privileges.
The technical flaw manifests in the zoom-link handler's improper validation of URLs passed to browser navigation functions. Specifically, when the panel processes user-defined links for zoom functionality, it directly forwards dashboard-editor-supplied URLs to window.location.assign() or window.open() without performing any scheme validation. This lack of input sanitization creates a classic cross-site scripting vulnerability that can be leveraged for arbitrary code execution. The vulnerability is particularly dangerous because it operates within the trusted Grafana origin context, meaning any malicious payload executed will have the same permissions and access rights as the legitimate Grafana application.
The operational impact of this vulnerability is significant, as it requires only dashboard Editor privileges to exploit, which are often granted to users who need to modify dashboard content but not necessarily full administrative access. An attacker with these permissions can craft a malicious javascript: URI that executes when any Viewer interacts with the panel through drag-zoom functionality. This creates a persistent threat vector where the malicious code executes automatically every time the affected panel is used, potentially leading to data exfiltration, session hijacking, or further exploitation of the Grafana environment. The vulnerability essentially transforms a legitimate dashboard editing feature into a weaponized attack vector that can compromise the entire Grafana instance.
The vulnerability maps directly to CWE-79 Cross-Site Scripting and aligns with ATT&CK techniques including T1059 Command and Scripting Interpreter for executing malicious code within the browser context. Organizations using the affected grafanacubism-panel plugin should immediately implement mitigations including upgrading to a patched version that properly validates URL schemes, implementing strict input validation for all dashboard editor inputs, and restricting dashboard editor privileges to only trusted users. Additionally, network-level protections such as content security policies and regular security audits of third-party plugins can help prevent exploitation of similar vulnerabilities in the Grafana ecosystem. The incident underscores the critical importance of validating all user-supplied inputs in web applications and demonstrates how seemingly innocuous features can become security risks when proper validation is omitted.