CVE-2024-5441: CWE-434 Unrestricted Upload of File with Dangerous Type in Webnus Modern Events Calendar
The Modern Events Calendar plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the set_featured_image function in all versions up to, and including, 7.11.0. This makes it possible for authenticated attackers, with subscriber access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible. The plugin allows administrators (via its settings) to extend the ability to submit events to unauthenticated users, which would allow unauthenticated attackers to exploit this vulnerability.
AI Analysis
Technical Summary
CVE-2024-5441 is a high-severity vulnerability (CVSS 8.8) in the Modern Events Calendar plugin for WordPress. The vulnerability arises from the lack of proper file type validation in the set_featured_image function, permitting arbitrary file uploads by authenticated users with subscriber-level privileges or higher. Additionally, if the plugin settings enable event submissions from unauthenticated users, this vulnerability can be exploited without authentication. The ability to upload arbitrary files may enable attackers to execute remote code on the server hosting the plugin.
Potential Impact
An attacker with subscriber-level access or higher can upload arbitrary files to the server, potentially leading to remote code execution. If unauthenticated event submissions are enabled, unauthenticated attackers can exploit this vulnerability. This compromises the confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict event submission permissions to trusted users only and disable unauthenticated event submissions if enabled. Monitor plugin updates from Webnus for a security patch addressing this vulnerability.
CVE-2024-5441: CWE-434 Unrestricted Upload of File with Dangerous Type in Webnus Modern Events Calendar
Description
The Modern Events Calendar plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the set_featured_image function in all versions up to, and including, 7.11.0. This makes it possible for authenticated attackers, with subscriber access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible. The plugin allows administrators (via its settings) to extend the ability to submit events to unauthenticated users, which would allow unauthenticated attackers to exploit this vulnerability.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-5441 is a high-severity vulnerability (CVSS 8.8) in the Modern Events Calendar plugin for WordPress. The vulnerability arises from the lack of proper file type validation in the set_featured_image function, permitting arbitrary file uploads by authenticated users with subscriber-level privileges or higher. Additionally, if the plugin settings enable event submissions from unauthenticated users, this vulnerability can be exploited without authentication. The ability to upload arbitrary files may enable attackers to execute remote code on the server hosting the plugin.
Potential Impact
An attacker with subscriber-level access or higher can upload arbitrary files to the server, potentially leading to remote code execution. If unauthenticated event submissions are enabled, unauthenticated attackers can exploit this vulnerability. This compromises the confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict event submission permissions to trusted users only and disable unauthenticated event submissions if enabled. Monitor plugin updates from Webnus for a security patch addressing this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2024-05-28T18:48:42.409Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 699f6be7b7ef31ef0b55bfa4
Added to database: 2/25/2026, 9:38:47 PM
Last enriched: 4/9/2026, 8:12:34 PM
Last updated: 4/12/2026, 3:00:28 PM
Views: 12
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