CVE-2026-86838 Details
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.
A vulnerability exists in the Bookly WordPress plugin in versions prior to 28.3, where the plugin fails to validate client-supplied booking quantity values on the server before calculating the appointment total. This flaw allows unauthenticated users to manipulate the total cost, reducing it to zero, and book paid services for free, effectively bypassing the payment process.
Users are advised to update the Bookly WordPress plugin to version 28.3 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 28, 2026CISA-ADP
Assessed Sep 28, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://wpscan.com/vulnerability/1c8a53e7-5556-4dcb-a461-c6df253d0b7a/ | [email protected] | AdvisoryExploitRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-472 | External Control of Assumed-Immutable Web Parameter | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| Bookly | < 28.3 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 28, 2026 | CVE Modified | CISA-ADP |
| Sep 28, 2026 | New CVE Received | [email protected] |