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Critical · 9.8 Scanner template Public exploit CVE-2026-18315 EUVD-2026-62630GHSA-7xx3-2cj6-229w

TrueBooker <= 1.2.6 - Unauthenticated Authorization Bypass Through User-Controlled Key to Account Takeover to 'truebooker_wp_user_id' Parameter

Published Aug 19, 2026 · Updated Aug 21, 2026 · Assigned by Wordfence

Vendor: themetechmount Product: TrueBooker – Appointment Booking and Scheduler System Category: Web / CMS

Description

The TrueBooker – Appointment Booking and Scheduler System plugin for WordPress is vulnerable to Authorization Bypass Through User-Controlled Key leading to Account Takeover in all versions up to, and including, 1.2.6. This is due to the admin_user_create_cus AJAX handler lacking any authentication or capability check before passing the attacker-supplied truebooker_wp_user_id parameter directly to wp_update_user. This makes it possible for unauthenticated attackers to overwrite the email address of any WordPress user — including an administrator — and then complete the standard WordPress lost-password flow to fully take over the targeted account.

Affected products

VendorProductAffectedFixed
themetechmount TrueBooker – Appointment Booking and Scheduler System ≤ 1.2.6 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • nastar-id/CVE-2026-18315-PoC ★ 0 · Aug 20, 2026

    Proof-of-concept for CVE-2026-18315 (TrueBooker WordPress Plugin): Unauthenticated Authorization Bypass Through User-Controlled Key to Account Takeover

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.

References