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CVE-2026-16282mediumCWE-287

Appointment Hour Booking < 1.5.88 - Unauthenticated Booking Price Manipulation via tcost Parameter

33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 5.3epss 0.2%
exploitation probability
0.2%top 92% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
The Appointment Hour Booking WordPress plugin before 1.5.88 does not validate a client-supplied booking price against the server-side configured service price, allowing unauthenticated users to submit an arbitrary final price (including zero or negative) that is stored as the authoritative booking price, corrupting booking and payment records.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.