CVE Daily

CVE-2025-4123

A cross-site scripting (XSS) vulnerability exists in Grafana caused by combining...

High CVSS 7.6

Overview

A cross-site scripting (XSS) vulnerability exists in Grafana caused by combining a client path traversal and open redirect. This allows attackers to redirect users to a website that hosts a frontend plugin that will execute arbitrary JavaScript. This vulnerability does not require editor permissions and if anonymous access is enabled, the XSS will work. If the Grafana Image Renderer plugin is installed, it is possible to exploit the open redirect to achieve a full read SSRF.

The default Content-Security-Policy (CSP) in Grafana will block the XSS though the `connect-src` directive.

CWE: CWE-79 Published: 2025-05-22T08:15:52.720
Risk analysis

This vulnerability is rated 🟠 HIGH.

  • CVSS: 7.6 (HIGH)
  • Detected tags: path, redirect, ssrf (tag impact: MODERATE)

Recommended actions:

  • Canonicalize path; block `..` traversal; use allowlists.
  • Deny access to internal/metadata addresses; use outbound allowlists.
  • Apply context-aware output encoding.
  • Enable Content-Security-Policy and HttpOnly/SameSite cookies.

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