The Bookly WordPress plugin before 28.3 does not validate client-supplied booking quantity values on the server before computing the appointment total, allowing unauthenticated users to reduce the total to zero and book paid services for free while bypassing the payment step.

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Fixes

Solution

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Workaround

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History

Mon, 28 Sep 2026 18:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20

Mon, 28 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-472
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 28 Sep 2026 08:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20

Mon, 28 Sep 2026 06:45:00 +0000

Type Values Removed Values Added
Description The Bookly WordPress plugin before 28.3 does not validate client-supplied booking quantity values on the server before computing the appointment total, allowing unauthenticated users to reduce the total to zero and book paid services for free while bypassing the payment step.
Title Bookly < 28.3 - Unauthenticated Payment Bypass via Booking Price Manipulation
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-09-28T15:32:11.498Z

Reserved: 2026-09-08T14:42:34.349Z

Link: CVE-2026-86838

cve-icon Vulnrichment

Updated: 2026-09-28T15:31:15.362Z

cve-icon NVD

Status : Deferred

Published: 2026-09-28T07:17:20.953

Modified: 2026-09-28T16:38:58.950

Link: CVE-2026-86838

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-28T18:00:04Z

Weaknesses