CVE-2021-24145 — Modern Events Calendar Lite < 5.16.5 - Authenticated Arbitrary File Upload leading to RCE

Description

Arbitrary file upload in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.5, did not properly check the imported file, allowing PHP ones to be uploaded by administrator by using the 'text/csv' content-type in the request.

Affected products

Vendor	Product	Affected	Fixed
—	Modern Events Calendar Lite	5.16.5 – < 5.16.5	5.16.5

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Metasploit 1 module

Wordpress Plugin Modern Events Calendar - Authenticated Remote Code Execution
exploit/multi/http/wp_plugin_modern_events_calendar_rce

Exploit-DB 1

Wordpress Plugin Modern Events Calendar 5.16.2 - Remote Code Execution (Authenticated) EDB-50082 · webapps · Jul 2, 2021

GitHub 1 repository

dnr6419/CVE-2021-24145 ★ 3 · Aug 14, 2021

WordPress File Upload Vulnerability, Modern Events Calendar Lite WordPress plugin before 5.16.5

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

WordPress Modern Events Calendar Lite <5.16.5 - Authenticated Arbitrary File Upload http/cves/2021/CVE-2021-24145.yaml

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.