CVE-2026-15282 | The Instant Appointment plugin for WordPress is vulnerable t… | CVSS 9.8 CRITICAL

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.

Metadata

CVE ID: CVE-2026-15282
State: PUBLISHED
Assigner: Wordfence
Reserved: 2026-07-09 15:48 UTC
Published: 2026-07-10 04:31 UTC
Last updated: 2026-07-10 04:31 UTC
Primary CWE: CWE-434
CWE-434 Unrestricted Upload of File with Dangerous Type
Vendor / Product: tenteeglobal / Instant Appointment
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products (1)

Vendor	Product	Platform	Versions
tenteeglobal	Instant Appointment	—	0 ≤ 1.2

Weakness (CWE)

CWE	Source	Description
CWE-434	cna	CWE-434 Unrestricted Upload of File with Dangerous Type

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (4)