CVE-2026-32117: grafanacubism-panel : Stored XSS via javascript: URL in panel zoom link (Editor → Viewer)

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-11 · updated 2026-06-17
Weakness: CWE-79

Description

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.

Affected products

ekacnet grafanacubism-panel: through 0.1.2

References

https://github.com/ekacnet/grafanacubism-panel/commit/b79cbf7e5eb3225bb204bcef274e15e6b19d9926
https://github.com/ekacnet/grafanacubism-panel/security/advisories/GHSA-q6fh-6m3m-5948

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