GHSA-XR8C-XPP9-8M4H

Vulnerability from github – Published: 2026-07-29 12:31 – Updated: 2026-07-29 12:31
VLAI
Details

The Booking System Trafft plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the bookingWebsiteUrl setting in all versions up to, and including, 1.0.17 due to a missing capability check on the set_options AJAX action when the plugin is operating in agency mode. The trafftSetOptions() handler verifies a nonce that is exposed to any authenticated user (it is printed inline on every admin page, including profile.php) but performs no capability check before calling update_option('trafft_option', ['bookingWebsiteUrl' => ...]). This setting is then used by trafftAdminAssets() to enqueue <bookingWebsiteUrl>/embed.js as a script on every front-end page that renders the booking shortcode. This makes it possible for authenticated attackers, with Subscriber-level access and above, to point the embed-script URL at an attacker-controlled origin and execute arbitrary JavaScript in the browser of every site visitor (including admins).

Severity
6.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-8791"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-29T11:16:50Z",
    "severity": "MODERATE"
  },
  "details": "The Booking System Trafft plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `bookingWebsiteUrl` setting in all versions up to, and including, 1.0.17 due to a missing capability check on the `set_options` AJAX action when the plugin is operating in agency mode. The `trafftSetOptions()` handler verifies a nonce that is exposed to any authenticated user (it is printed inline on every admin page, including profile.php) but performs no capability check before calling `update_option(\u0027trafft_option\u0027, [\u0027bookingWebsiteUrl\u0027 =\u003e ...])`. This setting is then used by `trafftAdminAssets()` to enqueue `\u003cbookingWebsiteUrl\u003e/embed.js` as a script on every front-end page that renders the booking shortcode. This makes it possible for authenticated attackers, with Subscriber-level access and above, to point the embed-script URL at an attacker-controlled origin and execute arbitrary JavaScript in the browser of every site visitor (including admins).",
  "id": "GHSA-xr8c-xpp9-8m4h",
  "modified": "2026-07-29T12:31:24Z",
  "published": "2026-07-29T12:31:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8791"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L139"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L155"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L176"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L325"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L354"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L139"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L155"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L176"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L325"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L354"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/e93060cf-2df3-4d45-a1f2-304f443d58bc?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}



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