GHSA-Q53Q-GXQ9-MGRJ

Vulnerability from github – Published: 2025-05-22 09:33 – Updated: 2025-07-21 12:42
VLAI?
Summary
Grafana Cross-Site-Scripting (XSS) via custom loaded frontend plugin
Details

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.

Severity ?
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/grafana/grafana"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20250521183405-c7a690348df7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-4123"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-05-22T18:50:43Z",
    "nvd_published_at": "2025-05-22T08:15:52Z",
    "severity": "HIGH"
  },
  "details": "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.\n\nThe default Content-Security-Policy (CSP) in Grafana will block the XSS though the `connect-src` directive.",
  "id": "GHSA-q53q-gxq9-mgrj",
  "modified": "2025-07-21T12:42:18Z",
  "published": "2025-05-22T09:33:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-4123"
    },
    {
      "type": "WEB",
      "url": "https://github.com/grafana/grafana/commit/c7a690348df761d41b659224cbc50a46a0c0e4cc"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/grafana/grafana"
    },
    {
      "type": "WEB",
      "url": "https://grafana.com/blog/2025/05/23/grafana-security-release-medium-and-high-severity-security-fixes-for-cve-2025-4123-and-cve-2025-3580"
    },
    {
      "type": "WEB",
      "url": "https://grafana.com/security/security-advisories/cve-2025-4123"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2025-3702"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Grafana Cross-Site-Scripting (XSS) via custom loaded frontend plugin"
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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