EUVD-2026-54192
GHSA-c9jf-h8vc-955p
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Network-accessible unauthenticated endpoint with no user interaction; integrity impact is limited to pricing manipulation, with no confidentiality or availability consequence.
Primary rating from Vendor (wpscan).
CVSS VectorVendor: wpscan
Lifecycle Timeline
3DescriptionCVE.org
The Easy Booking WordPress plugin before 3.5.0 does not re-enforce a bookable product's configured minimum booking duration on the server side when adding to cart and calculating the booking price, allowing unauthenticated users to place below-minimum bookings and complete underpriced orders.
AnalysisAI
Server-side validation bypass in the Easy Booking WordPress plugin (all versions before 3.5.0) allows unauthenticated remote attackers to circumvent minimum booking duration enforcement during cart addition and price calculation. Malicious users can submit manipulated add-to-cart requests with durations shorter than the merchant-configured minimums, completing orders at underpriced totals that the merchant is then expected to fulfill at a financial loss. No public exploit has been identified at time of analysis, though the unauthenticated, low-complexity attack vector makes this trivially reproducible by any remote attacker with HTTP access to the affected site.
Technical ContextAI
Easy Booking is a WordPress plugin enabling merchants to define bookable products with configurable constraints, including minimum booking durations used to enforce pricing logic. The root cause is a classic business logic flaw - the plugin enforces minimum duration client-side or at the point of product configuration display, but fails to re-validate that constraint on the server when the booking is added to the cart and when the booking price is calculated at checkout. This maps conceptually to CWE-602 (Client-Side Enforcement of Server-Side Security) and CWE-20 (Improper Input Validation), though no formal CWE is assigned in the NVD entry. Affected versions span the full range from 0 through 3.5.0 (exclusive) per EUVD-2026-54192, with version 3.5.0 introducing the server-side re-enforcement fix. No CPE string was provided in the intelligence data.
RemediationAI
Upgrade the Easy Booking WordPress plugin to version 3.5.0 or later, which introduces server-side re-enforcement of minimum booking duration during cart addition and price calculation. Patch availability is confirmed by the vendor and documented in the WPScan advisory at https://wpscan.com/vulnerability/1a64d797-7807-42e3-aca7-d93ecb723008/. If an immediate upgrade is not feasible, a compensating control is to manually audit all incoming bookings against configured minimum durations before processing payment fulfillment - this is operationally intensive but prevents financial loss. Alternatively, temporarily removing minimum duration constraints from affected bookable products eliminates the exploitable price discrepancy, though this relaxes legitimate business enforcement rules and may require merchant policy adjustments.
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