Booking record corruption via trusted client price
Published Aug 8, 2026 · Updated Aug 8, 2026
Price-validation bypass in CodePeople Appointment Hour Booking before 1.5.88 allows remote attackers to corrupt booking and payment records. The front-end POST handler accepts the attacker-controlled tcostfieldname1_1 value as final_price instead of recalculating the configured service price. A publicly posted booking form with a priced service is required; one unauthenticated submission stores a zero, negative, or inflated price and consumes the chosen time slot.
Summary
What happened
Price-validation bypass in CodePeople Appointment Hour Booking before 1.5.88 allows remote attackers to corrupt booking and payment records. The front-end POST handler accepts the attacker-controlled tcostfieldname1_1 value as final_price instead of recalculating the configured service price. A publicly posted booking form with a priced service is required; one unauthenticated submission stores a zero, negative, or inflated price and consumes the chosen time slot.
The record
- CVE
- CVE-2026-16282
- Published
- Aug 8, 2026
- Updated
- Aug 8, 2026
- Vendor
- CodePeople
- Product
- Appointment Hour Booking – Booking Calendar
- Classifications
- CWE-287, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 8, 2026CVE publishedPublication date reported by the CVE source.
- Aug 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <1.5.88
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- WPScan unauthenticated booking-price proof of conceptfunctional · validated
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Technologies
Your stack
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Your stack
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