Vulnerability · Published Sep 28, 2026 · Assigned by WPScan

CVE-2026-86838Bookly < 28.3 - Unauthenticated Payment Bypass via Booking Price Manipulation

Medium 5.3

In plain English

A medium-severity security flaw in Bookly from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.2%top 84.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Bookly	0 – before 28.3

Weakness: CWE-472 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

https://wpscan.com/vulnerability/1c8a53e7-5556-4dcb-a461-c6df253d0b7a/ exploit, vdb-entry, technical-description