Read the docs
TI-2026-15381 Aliases CVE-2026-18777GHSA-8fxq-m46w-rjrf

Missing authorization in TrueBooker

Priority LOW 30CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-862.

Summary

The TrueBooker WordPress plugin before 1.2.7 does not have proper authorisation checks in one of its AJAX actions, allowing unauthenticated users to change the status of arbitrary appointments, as well as to trigger notification emails to the affected customers.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00304 23rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed TrueBooker (Unknown): 1.2.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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

VendorProductAffected versionsFixed inStatusSource
UnknownTrueBookerbefore 1.2.71.2.7Patch availableCNA
  • TrueBooker VendorUnknown Affected before 1.2.7 Fixed in 1.2.7 Patch available CNA

Remediation

  • Fix · CNA TrueBooker (Unknown) Fixed in 1.2.7

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    TrueBooker 1.2.7

    4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-15380 TrueBooker Appointment Booking < 1.2.7 - Unauthenticated Account Takeover via Multiple AJAX ActionsPriority MEDIUM 49
    • TI-2026-15383 Missing authorization in TrueBookerPriority LOW 30
    • TI-2026-15382 TrueBooker Appointment Booking < 1.2.7 - Unauthenticated Customer PII Disclosure via Multiple AJAX ActionsPriority LOW 30
    Show all 4 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-18777
  2. 2026-10-03 Alias added: GHSA-8fxq-m46w-rjrf

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences