GHSA-7PR4-WX9W-MQWR

Vulnerability from github – Published: 2026-02-09 20:35 – Updated: 2026-02-09 22:38
VLAI?
Summary
Craft CMS Vulnerable to Stored XSS in Entry Types Name
Details

Summary

Stored XSS via Entry Type names. The name is not sanitized when displayed in the Entry Types list.

Proof of Concept

Required Permissions (Attacker)

  • Admin access (only admins have access to the settings page)
  • allowAdminChanges is enabled in production, which is against our security recommendations.

Steps to Reproduce

  1. Log in as an attacker.
  2. Go to Settings -> Entry Types (/admin/settings/entry-types).
  3. Create a new Entry Type.
  4. Set Name to:
<img src=x onerror="alert('XSS-EntryTypes')" hidden>
  1. Save the Entry Type, and you’ll be redirected back to the entry types table automatically.
  2. Notice the alert fires when the entry types table renders.
Severity ?
1.9 (Low)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Show details on source website
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 5.8.21"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "craftcms/cms"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0.0-RC1"
            },
            {
              "fixed": "5.8.22"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-25491"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-09T20:35:10Z",
    "nvd_published_at": "2026-02-09T20:15:57Z",
    "severity": "LOW"
  },
  "details": "## Summary\n\nStored XSS via Entry Type names. The name is not sanitized when displayed in the Entry Types list.\n\n---\n## Proof of Concept\n\n### Required Permissions (Attacker)\n\n- Admin access (only admins have access to the settings page)\n- `allowAdminChanges` is enabled in production, which is against our [security recommendations](https://craftcms.com/knowledge-base/securing-craft).\n\n### Steps to Reproduce\n1. Log in as an attacker.\n2. Go to **Settings** -\u003e **Entry Types** (`/admin/settings/entry-types`).\n3. Create a new Entry Type.\n4. Set **Name** to:\n```html\n\u003cimg src=x onerror=\"alert(\u0027XSS-EntryTypes\u0027)\" hidden\u003e\n```\n5. Save the Entry Type, and you\u2019ll be redirected back to the entry types table automatically.\n6. Notice the alert fires when the entry types table renders.",
  "id": "GHSA-7pr4-wx9w-mqwr",
  "modified": "2026-02-09T22:38:18Z",
  "published": "2026-02-09T20:35:10Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/craftcms/cms/security/advisories/GHSA-7pr4-wx9w-mqwr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25491"
    },
    {
      "type": "WEB",
      "url": "https://github.com/craftcms/cms/commit/cfd6ba0e2ce1a59a02d75cae6558c4ace1ab8bd4"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/craftcms/cms"
    },
    {
      "type": "WEB",
      "url": "https://github.com/craftcms/cms/releases/tag/5.8.22"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Craft CMS Vulnerable to Stored XSS in Entry Types Name"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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