EUVD-2026-76813
GHSA-mqrq-3vgp-g3ff
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
AV:N/PR:N confirmed by public unauthenticated endpoint; I:H reflects complete circumvention of payment collection, not merely partial integrity degradation.
Primary rating from Vendor (wpscan).
CVSS VectorVendor: wpscan
Lifecycle Timeline
6DescriptionCVE.org
The Booking for Appointments and Events Calendar WordPress plugin before 9.8.1 does not verify that a payment was actually taken before recording a booking as paid, trusting the payment gateway named in a public, unauthenticated booking request even when the site has never configured that gateway. This lets an unauthenticated attacker obtain confirmed, fully paid appointments and events without any payment being collected.
AnalysisAI
Payment verification bypass in the Booking for Appointments and Events Calendar WordPress plugin before 9.8.1 enables unauthenticated attackers to obtain confirmed paid bookings for appointments and events without submitting any payment. The plugin trusts the gateway name embedded in the public booking POST request rather than verifying actual payment receipt server-side, and will mark a booking as fully paid even when the named gateway has never been configured on the site. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions are required beyond the site running an unpatched version of the plugin (before 9.8.1) with at least one paid booking type configured. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 5.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N) understates financial impact by classifying integrity as Low. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: version 9.8.1. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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