tenteeglobal Instant Appointment Plugin up to 1.2 File Upload insapp_upload_image_as_attachment unrestricted upload

Summaryinfo

A vulnerability was found in tenteeglobal Instant Appointment Plugin up to 1.2. It has been classified as critical. Affected by this issue is the function insapp_upload_image_as_attachment of the component File Upload. This manipulation causes unrestricted upload. The identification of this vulnerability is CVE-2026-15282. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in tenteeglobal Instant Appointment Plugin up to 1.2. Affected by this vulnerability is the function insapp_upload_image_as_attachment of the component File Upload. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at wordfence.com. This vulnerability is known as CVE-2026-15282 since 07/09/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/10/2026). MITRE ATT&CK project uses the attack technique T1608.002 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Appointment Software

Vendor

• tenteeglobal

Name

• Instant Appointment Plugin

Version

• 1.0
• 1.1
• 1.2

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion