CVE-2026-1657: CWE-862 Missing Authorization in metagauss EventPrime – Events Calendar, Bookings and Tickets
The EventPrime plugin for WordPress is vulnerable to unauthorized image file upload in all versions up to, and including, 4.2.8.4. This is due to the plugin registering the upload_file_media AJAX action as publicly accessible (nopriv-enabled) without implementing any authentication, authorization, or nonce verification despite a nonce being created. This makes it possible for unauthenticated attackers to upload image files to the WordPress uploads directory and create Media Library attachments via the ep_upload_file_media endpoint.
AI Analysis
Technical Summary
CVE-2026-1657 is a missing authorization vulnerability in the EventPrime – Events Calendar, Bookings and Tickets WordPress plugin. The plugin exposes the upload_file_media AJAX action to unauthenticated users (nopriv-enabled) without enforcing authentication, authorization, or nonce verification. This allows attackers to upload image files directly to the WordPress uploads directory and create media attachments via the ep_upload_file_media endpoint. The vulnerability affects all versions up to and including 4.2.8.4. No official patch or remediation link is provided in the data, and the plugin is not a cloud service.
Potential Impact
An unauthenticated attacker can upload image files to the WordPress uploads directory and create media library attachments. While the CVSS score indicates no confidentiality or availability impact, there is an integrity impact due to unauthorized file uploads. This could potentially be leveraged for further attacks depending on the environment, but no direct exploitation in the wild is known.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the vulnerable AJAX endpoint if possible or disable the plugin temporarily. Monitor for updates from the vendor metagauss regarding patches or official fixes.
CVE-2026-1657: CWE-862 Missing Authorization in metagauss EventPrime – Events Calendar, Bookings and Tickets
Description
The EventPrime plugin for WordPress is vulnerable to unauthorized image file upload in all versions up to, and including, 4.2.8.4. This is due to the plugin registering the upload_file_media AJAX action as publicly accessible (nopriv-enabled) without implementing any authentication, authorization, or nonce verification despite a nonce being created. This makes it possible for unauthenticated attackers to upload image files to the WordPress uploads directory and create Media Library attachments via the ep_upload_file_media endpoint.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-1657 is a missing authorization vulnerability in the EventPrime – Events Calendar, Bookings and Tickets WordPress plugin. The plugin exposes the upload_file_media AJAX action to unauthenticated users (nopriv-enabled) without enforcing authentication, authorization, or nonce verification. This allows attackers to upload image files directly to the WordPress uploads directory and create media attachments via the ep_upload_file_media endpoint. The vulnerability affects all versions up to and including 4.2.8.4. No official patch or remediation link is provided in the data, and the plugin is not a cloud service.
Potential Impact
An unauthenticated attacker can upload image files to the WordPress uploads directory and create media library attachments. While the CVSS score indicates no confidentiality or availability impact, there is an integrity impact due to unauthorized file uploads. This could potentially be leveraged for further attacks depending on the environment, but no direct exploitation in the wild is known.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the vulnerable AJAX endpoint if possible or disable the plugin temporarily. Monitor for updates from the vendor metagauss regarding patches or official fixes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-01-29T20:00:13.921Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6994003ed1735ca7311ee332
Added to database: 2/17/2026, 5:44:30 AM
Last enriched: 4/9/2026, 6:31:52 PM
Last updated: 5/21/2026, 8:53:07 PM
Views: 249
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