CVE-2026-1657

MEDIUM

EventPrime WordPress Plugin <4.2.8.4 - Unauthenticated File Upload

Title source: llm

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.

Exploits (2)

nomisec WRITEUP

by d3kc4rt1 · poc

https://github.com/d3kc4rt1/CVE-2026-1657

View Code ZIP pw:eip

nomisec WORKING POC

by Vimash-Dilsara · poc

https://github.com/Vimash-Dilsara/-CVE-2026-1657

View Code ZIP pw:eip

References (6)

[Product] https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/tags/4.2.8.1/includes/class-eventprime-event-calendar-management.php#L557

[Product] https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/trunk/includes/class-ep-ajax.php#L1659

[Product] https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/trunk/includes/class-eventprime-event-calendar-management.php#L557

[Product] https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3455239%40eventprime-event-calendar-management%2Ftrunk&old=3452796%40eventprime-event-calendar-management%2Ftrunk&sfp_email=&sfph_mail=

[Product] https://plugins.trac.wordpress.org/browser/eventprime-event-calendar-management/tags/4.2.8.1/includes/class-ep-ajax.php#L1659

[Third Party Advisory] https://www.wordfence.com/threat-intel/vulnerabilities/id/42aa82ff-0d37-4040-b8fc-84d29534a4b7?source=cve

Scores

CVSS v3 5.3

EPSS 0.0013

EPSS Percentile 32.6%

Attack Vector NETWORK

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

Details

CWE

CWE-862

Status published

Products (1)

metagauss/EventPrime – Events Calendar, Bookings and Tickets < 4.2.8.4

Published Feb 17, 2026

Tracked Since Feb 18, 2026