FKIE_CVE-2026-8791

Vulnerability from fkie_nvd - Published: 2026-07-29 11:16 - Updated: 2026-07-30 14:01
Severity
6.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Summary
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).
References
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L139
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L155
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L176
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L325
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L354
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L139
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L155
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L176
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L325
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L354
security@wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/e93060cf-2df3-4d45-a1f2-304f443d58bc?source=cve
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Booking System Trafft",
          "vendor": "ameliabooking",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 1.0.17"
            }
          ]
        }
      ],
      "source": "security@wordfence.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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": "CVE-2026-8791",
  "lastModified": "2026-07-30T14:01:30.413",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 2.7,
        "source": "security@wordfence.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-8791",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-29T15:21:57.742541Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-29T11:16:50.690",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L139"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L155"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L176"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L325"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/tags/1.0.17/trafft.php#L354"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L139"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L155"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L176"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L325"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/booking-system-trafft/trunk/trafft.php#L354"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/e93060cf-2df3-4d45-a1f2-304f443d58bc?source=cve"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Secondary"
    }
  ]
}



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