CVE-2026-15282: CWE-434 Unrestricted Upload of File with Dangerous Type in tenteeglobal Instant Appointment
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.
AI Analysis
Technical Summary
CVE-2026-15282 is a critical vulnerability in the tenteeglobal Instant Appointment WordPress plugin versions up to and including 1.2. The vulnerability arises from the lack of proper file type validation in the 'insapp_upload_image_as_attachment' function, enabling unauthenticated attackers to upload arbitrary files to the server. This unrestricted file upload can potentially lead to remote code execution, compromising the affected system. No official patch or remediation guidance is currently available from the vendor or authoritative sources.
Potential Impact
Successful exploitation allows unauthenticated attackers to upload arbitrary files, which may lead to remote code execution, full compromise of the affected web server, and potential further attacks on the hosting environment or connected systems. The vulnerability affects confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the plugin's upload functionality if possible, and consider disabling or removing the Instant Appointment plugin to mitigate risk. Monitor for updates from tenteeglobal regarding a security patch.
CVE-2026-15282: CWE-434 Unrestricted Upload of File with Dangerous Type in tenteeglobal Instant Appointment
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.
CVSS v3.1
Score 9.8critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-15282 is a critical vulnerability in the tenteeglobal Instant Appointment WordPress plugin versions up to and including 1.2. The vulnerability arises from the lack of proper file type validation in the 'insapp_upload_image_as_attachment' function, enabling unauthenticated attackers to upload arbitrary files to the server. This unrestricted file upload can potentially lead to remote code execution, compromising the affected system. No official patch or remediation guidance is currently available from the vendor or authoritative sources.
Potential Impact
Successful exploitation allows unauthenticated attackers to upload arbitrary files, which may lead to remote code execution, full compromise of the affected web server, and potential further attacks on the hosting environment or connected systems. The vulnerability affects confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the plugin's upload functionality if possible, and consider disabling or removing the Instant Appointment plugin to mitigate risk. Monitor for updates from tenteeglobal regarding a security patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-07-09T15:48:27.727Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a50809268715ace43063675
Added to database: 07/10/2026, 05:18:10 UTC
Last enriched: 07/17/2026, 09:29:09 UTC
Last updated: 08/22/2026, 12:30:19 UTC
Views: 105
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