The Online Scheduling and Appointment Booking System WordPress plugin before 28.3 does not verify that appointment and payment records requested through its staff-role AJAX actions belong to the requesting staff member, allowing authenticated attackers with a staff-level account to view, modify and delete other staff members' appointments and payments, including the associated customer's personal information.
PUBLISHED5.2
Bookly < 28.3 - Staff+ Appointment and Payment Disclosure, Modification and Deletion via IDOR
Problem type
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected products
Unknown
Online Scheduling and Appointment Booking System
< 28.3 - AFFECTED
References
GitHub Security Advisories
GHSA-36wf-cx88-gfjh
The Online Scheduling and Appointment Booking System WordPress plugin before 28.3 does not...
https://github.com/advisories/GHSA-36wf-cx88-gfjhThe Online Scheduling and Appointment Booking System WordPress plugin before 28.3 does not verify that appointment and payment records requested through its staff-role AJAX actions belong to the requesting staff member, allowing authenticated attackers with a staff-level account to view, modify and delete other staff members' appointments and payments, including the associated customer's personal information.
JSON source
https://cveawg.mitre.org/api/cve/CVE-2026-86839Click to expand
{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-86839",
"assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"assignerShortName": "WPScan",
"dateUpdated": "2026-09-27T06:00:20.309Z",
"dateReserved": "2026-09-08T14:43:22.104Z",
"datePublished": "2026-09-27T06:00:20.309Z",
"state": "PUBLISHED"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"shortName": "WPScan",
"dateUpdated": "2026-09-27T06:00:20.309Z"
},
"title": "Bookly < 28.3 - Staff+ Appointment and Payment Disclosure, Modification and Deletion via IDOR",
"descriptions": [
{
"lang": "en",
"value": "The Online Scheduling and Appointment Booking System WordPress plugin before 28.3 does not verify that appointment and payment records requested through its staff-role AJAX actions belong to the requesting staff member, allowing authenticated attackers with a staff-level account to view, modify and delete other staff members' appointments and payments, including the associated customer's personal information."
}
],
"affected": [
{
"vendor": "Unknown",
"product": "Online Scheduling and Appointment Booking System",
"defaultStatus": "unaffected",
"versions": [
{
"version": "0",
"status": "affected",
"versionType": "semver",
"lessThan": "28.3"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"description": "CWE-639 Authorization Bypass Through User-Controlled Key",
"type": "CWE"
}
]
}
],
"references": [
{
"url": "https://wpscan.com/vulnerability/3ab8b879-3ef7-4aa4-8620-1bde99697dcb/",
"tags": [
"exploit",
"vdb-entry",
"technical-description"
]
}
],
"credits": [
{
"lang": "en",
"value": "Vũ Quang Huy",
"type": "finder"
},
{
"lang": "en",
"value": "WPScan",
"type": "coordinator"
}
]
}
}
}