GHSA-XVG3-935W-4MV9

Vulnerability from github – Published: 2026-05-28 09:31 – Updated: 2026-05-28 09:31
VLAI
Details

The SlimStat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'User-Agent' header in all versions up to, and including, 5.4.11 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The show_complete_user_agent_tooltip setting must be explicitly enabled by an administrator (disabled by default) for the stored payload to be rendered and executed.

Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-7634"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T08:16:36Z",
    "severity": "HIGH"
  },
  "details": "The SlimStat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the \u0027User-Agent\u0027 header in all versions up to, and including, 5.4.11 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The show_complete_user_agent_tooltip setting must be explicitly enabled by an administrator (disabled by default) for the stored payload to be rendered and executed.",
  "id": "GHSA-xvg3-935w-4mv9",
  "modified": "2026-05-28T09:31:19Z",
  "published": "2026-05-28T09:31:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7634"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wp-slimstat/wp-slimstat/pull/297"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-slimstat/tags/5.4.11/admin/view/wp-slimstat-reports.php#L2099"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-slimstat/tags/5.4.11/src/Services/Browscap.php#L270"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-slimstat/tags/5.4.11/src/Tracker/Processor.php#L776"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-slimstat/tags/5.4.11/src/Tracker/Storage.php#L25"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-slimstat/tags/5.4.4/admin/view/wp-slimstat-reports.php#L2099"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-slimstat/tags/5.4.4/src/Services/Browscap.php#L270"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-slimstat/tags/5.4.4/src/Tracker/Processor.php#L776"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-slimstat/tags/5.4.4/src/Tracker/Storage.php#L25"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-slimstat/trunk/admin/view/wp-slimstat-reports.php#L2099"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-slimstat/trunk/src/Services/Browscap.php#L270"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-slimstat/trunk/src/Tracker/Processor.php#L776"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-slimstat/trunk/src/Tracker/Storage.php#L25"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/0a309bf8-7fe3-4033-993c-3c8dba0f216d?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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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