CVE-2026-1657

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.

CVSS v3.1

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

0.38% chance of exploitation in the next 30 days, 31th percentile

Published

2026-02-17

Updated

2026-04-08

Proof-of-concept exploits (2)

• VimashDilshara/-CVE-2026-16570★ · 2026-03-28
• d3kc4rt1/CVE-2026-16570★ · 2026-04-09

References

• CVE Record
• NVD entry

Related

• CVE-2025-14893
• CVE-2025-15260
• CVE-2026-1375
• CVE-2026-16569
• CVE-2026-16570
• CVE-2026-16568