Online Scheduling and Appointment Booking System – Bookly <= 27.0 - Unauthenticated Price Manipulation via 'tips'

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-2519",
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "dateUpdated": "2026-04-09T12:28:06.471Z",
    "dateReserved": "2026-02-15T06:39:59.038Z",
    "datePublished": "2026-04-09T12:28:06.471Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence",
        "dateUpdated": "2026-04-09T12:28:06.471Z"
      },
      "title": "Online Scheduling and Appointment Booking System – Bookly <= 27.0 - Unauthenticated Price Manipulation via 'tips'",
      "descriptions": [
        {
          "lang": "en",
          "value": "The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to price manipulation via the 'tips' parameter in all versions up to, and including, 27.0. This is due to the plugin trusting a user-supplied input without server-side validation against the configured price. This makes it possible for unauthenticated attackers to submit a negative number to the 'tips' parameter, causing the total price to be reduced to zero."
        }
      ],
      "affected": [
        {
          "vendor": "ladela",
          "product": "Online Scheduling and Appointment Booking System – Bookly",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "27.0"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-472 External Control of Assumed-Immutable Web Parameter",
              "cweId": "CWE-472",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ead87d8b-2659-4e8b-a0b9-138b1db89e36?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/lib/UserBookingData.php#L355"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/frontend/modules/booking/Ajax.php#L709"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/lib/CartInfo.php#L450"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset/3480956/"
        },
        {
          "url": "https://www.booking-wp-plugin.com/change-log/"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM"
          }
        }
      ],
      "timeline": [
        {
          "time": "2026-03-31T11:25:57.000Z",
          "lang": "en",
          "value": "Vendor Notified"
        },
        {
          "time": "2026-04-08T00:00:00.000Z",
          "lang": "en",
          "value": "Disclosed"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Youssef Elouaer",
          "type": "finder"
        }
      ]
    }
  }
}