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Critical · 9.8 Public exploit CVE-2026-15282 EUVD-2026-42790GHSA-xp53-g87w-p23f

Instant Appointment <= 1.2 - Unauthenticated Arbitrary File Upload

Published Jul 10, 2026 · Updated Jul 14, 2026 · Assigned by Wordfence

Vendor: tenteeglobal Product: Instant Appointment Category: Web / CMS

Description

The Instant Appointment plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'insapp_upload_image_as_attachment' function in all versions up to, and including, 1.2. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Affected products

VendorProductAffectedFixed
tenteeglobal Instant Appointment ≤ 1.2 —

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

  • shinthink/CVE-2026-15282 ★ 0 · Jul 11, 2026

    Instant Appointment <= 1.2 — Unauthenticated Arbitrary File Upload to RCE via add_service_front AJAX | CVSS 9.8

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

References