CVE-2026-16282 json
Appointment Hour Booking < 1.5.88 - Unauthenticated Booking Price Manipulation via tcost Parameter
published 2026-08-08 3 mo ago modified 2026-08-26 2 mo ago also EUVD-2026-54731
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Unknown Appointment Hour Booking 1.5.88
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/e87116af-d202-434b-9f47-e61e9c886240/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
Affected products
- Unknown Appointment Hour Booking
Classification
- Weakness
-
- CWE-287 Improper Authentication
- Technology feeds
References
-
wpscan.com
/vulnerability/e87116af-d202-434b-9f47-e61e9c886240/
exploit, vdb-entry, technical-description
Sources
- CVE List CVE-2026-16282
- NVD CVE-2026-16282
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