Appointment Hour Booking < 1.5.95 - Unauthenticated Booking Capacity Bypass via Multi-Appointment Submission
Priority MEDIUM 63CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
The Appointment Hour Booking WordPress plugin before 1.5.95 does not check every appointment in a booking submission against the capacity configured for its own slot, allowing unauthenticated visitors to take slots that are already fully booked.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0031 24th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Appointment Hour Booking (Unknown): 1.5.95
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Appointment Hour Booking | before 1.5.95 | 1.5.95 | Patch available | CNA |
- Appointment Hour Booking VendorUnknown Affected before 1.5.95 Fixed in 1.5.95 Patch available CNA
Remediation
- Fix · CNA Appointment Hour Booking (Unknown) Fixed in 1.5.95
Timeline
- 2026-10-02 Threatist record created from CVE-2026-86475
- 2026-10-03 Alias added: GHSA-cqfw-wgfw-rqrw
References
Sources
- CVE-2026-86475 · CVE Program
- CVE-2026-86475 · NVD
- FIRST EPSS
- GHSA-cqfw-wgfw-rqrw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences