CVE-2025-32160 is a vulnerability classified as improper control of filename for include/require statements in PHP programs, specifically within the EventON plugin developed by Ashan Perera. This vulnerability is a form of Remote File Inclusion (RFI), where the application fails to properly validate or sanitize user-supplied input used in PHP include or require functions. As a result, an attacker can manipulate the filename parameter to include malicious remote files hosted on attacker-controlled servers. This can lead to arbitrary code execution on the server, allowing attackers to execute commands, install backdoors, or pivot within the network. The affected product is EventON, a popular WordPress event calendar plugin, with versions up to and including 2.4.1 vulnerable. The vulnerability was officially published on April 10, 2025, with no CVSS score assigned yet and no known exploits reported in the wild. The lack of patch links suggests that a fix may not yet be publicly available, increasing the urgency for users to monitor vendor communications. The vulnerability is critical because it allows unauthenticated remote attackers to execute arbitrary code by controlling the file inclusion process, which directly impacts system integrity and availability. The attack vector is remote and does not require user interaction, making it highly exploitable in typical web hosting environments where EventON is deployed.

The impact of CVE-2025-32160 is severe for organizations using the EventON plugin on their WordPress sites. Successful exploitation can lead to remote code execution, allowing attackers to take full control of the affected web server. This compromises the confidentiality of sensitive data stored or processed by the server, including user information and credentials. Integrity is at risk as attackers can modify website content, inject malicious scripts, or alter backend data. Availability can be disrupted by attackers deleting files, defacing websites, or deploying ransomware. Organizations relying on EventON for event management may face service outages, reputational damage, and regulatory compliance issues due to data breaches. The vulnerability's remote and unauthenticated nature increases the likelihood of automated exploitation attempts, especially once public exploits emerge. Additionally, compromised servers can be used as launchpads for further attacks within corporate networks or to distribute malware to visitors, amplifying the threat's reach.

1. Monitor official vendor channels and security advisories for patches or updates addressing CVE-2025-32160 and apply them immediately upon release. 2. In the absence of an official patch, implement temporary mitigations such as disabling or restricting the vulnerable include/require functionality via code review or custom plugin modifications. 3. Employ web application firewalls (WAFs) with rules to detect and block suspicious file inclusion attempts, especially those containing remote URLs or unexpected parameters. 4. Restrict PHP configurations by disabling allow_url_include and allow_url_fopen directives to prevent remote file inclusion. 5. Conduct thorough input validation and sanitization on all user-supplied data used in file operations to ensure only legitimate local files are included. 6. Regularly audit and monitor web server logs for unusual requests or errors indicative of exploitation attempts. 7. Isolate WordPress installations and plugins in containerized or sandboxed environments to limit the blast radius of potential compromises. 8. Educate development and operations teams about secure coding practices related to file inclusion and PHP configuration hardening.