# CVE-2026-39798: TrueBooker unauthenticated settings change

Source: https://junglewise.ai/threats/cve-2026-39798-unauthenticated-settings-change-in-truebooker-1-2-9-versions  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-06. Updated: 2026-10-06  
License: CC BY 4.0 with a link back

CVE-2026-39798 · Severity: medium · CVSS 6.5 · Published 2026-10-06

TrueBooker is a WordPress appointment booking plugin. An unauthenticated attacker can change plugin settings without authorization, potentially altering booking configurations, contact information, or payment settings and disrupting the booking service.

Vendors: [TrueBooker](https://junglewise.ai/threats/vendors/truebooker).

## Quick answers

**Is CVE-2026-39798 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-39798 being exploited in the wild.

**How severe is CVE-2026-39798?** Medium severity, with a CVSS score of 6.5, published 6 October 2026.

**Which products and versions are affected?** TrueBooker 1.2.9 and earlier.

**Is there a fix for CVE-2026-39798?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-39798 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-39798?** Check whether you run TrueBooker at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An unauthenticated settings modification vulnerability in TrueBooker allows unauthorized access to plugin configuration endpoints. The plugin fails to enforce proper authentication checks on settings-change operations, enabling an attacker to directly modify booking parameters and plugin behavior via network requests without any credentials.

## Affected products

- TrueBooker TrueBooker 1.2.9 and earlier

## Timeline

- 2026-10-06: disclosed

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/truebooker-appointment-booking/vulnerability/wordpress-truebooker-plugin-1-2-9-settings-change-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/truebooker-appointment-booking/vulnerability/wordpress-truebooker-plugin-1-2-9-settings-change-vulnerability?_s_id=cve)

## Related threats

- [TrueBooker Appointment Booking broken access control](https://junglewise.ai/threats/cve-2026-48881-truebooker-appointment-booking-broken-access-control)