WordPress
CVE-2026-1657
MEDIUM
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Unauthenticated attackers can upload arbitrary image files to WordPress sites running EventPrime plugin versions up to 4.2.8.4 through an unprotected AJAX endpoint that lacks proper authentication checks. This vulnerability allows unauthorized file uploads to the media library, potentially enabling further attacks such as stored XSS or malicious file distribution. No patch is currently available.
Technical ContextAI
This vulnerability (CWE-862: Missing Authorization) exists in the ep_upload_file_media component. 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 v
Affected ProductsAI
Vendor: WordPress. Product: EventPrime (WordPress plugin). Versions: up to 4.2.8.4.. Component: ep_upload_file_media.
RemediationAI
Monitor vendor advisories for a patch. Validate file types by content. Store uploads outside web root. Restrict network access to the affected service where possible.
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Same weakness CWE-862 – Missing Authorization
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External POC / Exploit Code
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