Bookly < 28.3 - Unauthenticated Payment Bypass via Booking Price Manipulation

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-86838
StatePUBLISHED
AssignerWPScan
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-28 07:17:20 UTC
Updated2026-09-28 16:38:58 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.002170000 probability, percentile 0.108740000 (date 2026-09-29)

Problem Types: CWE-472 | CWE-472 External Control of Assumed-Immutable Web Parameter | CWE-472 CWE-472 External Control of Assumed-Immutable Web Parameter

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Unknown Bookly affected 28.3 semver Not specified

References

ReferenceSourceLinkTags
wpscan.com/vulnerability/1c8a53e7-5556-4dcb-a461-c6df253d0b7a [email protected] wpscan.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: vuxvinh (en)

CNA: WPScan (en)

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