TI-2026-67991 Aliases CVE-2026-39798 GHSA-r5jp-2p9p-7ppp

TrueBooker plugin missing authorization lets attackers change settings

LOW 34CWE-862Published 2026-10-06 · Updated 2026-10-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · Low
Fix status: No fix listed

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

Summary

The WordPress TrueBooker plugin from ThemetechMount, through version 1.2.9, is affected. A missing authorization check (CWE-862) lets an unauthenticated remote attacker change plugin settings. The CVSS vector rates the impact as low confidentiality, integrity and availability, and no user interaction is needed.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Unauthenticated Settings Change in TrueBooker <= 1.2.9 versions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00242 15th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

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

Vendor	Product	Affected versions	Fixed in	Status	Source
themetechmount	TrueBooker	up to 1.2.9	—	No fix listed	CNA

TrueBooker Vendorthemetechmount Affected up to 1.2.9 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for TrueBooker.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-06 Threatist record created from CVE-2026-39798
2026-10-06 Alias added: GHSA-r5jp-2p9p-7ppp
2026-10-06 CISA SSVC decision points changed
2026-10-06 Priority changed: MEDIUM → LOW

References

Other 1

https://patchstack.com/database/wordpress/plugin/truebooker-appointment-booking/vulnerability/wordpress-truebooker-plugin-1-2-9-settings-change-vulnerability?_s_id=cve

TI-2024-06423 TrueBooker < 1.0.3 - Multiple Unauthenticated SQLi CVSS 3.1CRITICAL 9.8
TI-2026-36145 WordPress TrueBooker plugin <= 1.1.9 - Broken Access Control vulnerability CVSS 3.1CRITICAL 9.1
TI-2026-15066 Authorization bypass in themetechmount TrueBooker – Appointment Booking and Scheduler… CVSS 3.1CRITICAL 9.8
TI-2024-06424 TrueBooker < 1.0.3 - Settings Update via CSRF CVSS 3.1MEDIUM 4.3
TI-2026-13508 Authorization bypass in themetechmount TrueBooker – Appointment Booking and Scheduler… CVSS 3.1CRITICAL 9.8
TI-2026-12146 TrueBooker <= 1.2.3 - Missing Authorization to Unauthenticated Arbitrary Password Reset via 'truebooker_wp_user_id' CVSS 3.1CRITICAL 9.8

See all 17 →

Sources

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