CVE-2026-22446 is a vulnerability classified as Improper Control of Filename for Include/Require Statement in PHP programs, commonly known as a Remote File Inclusion (RFI) vulnerability. It affects the Select-Themes Prowess WordPress theme versions up to and including 1.8.1. The root cause is insufficient validation or sanitization of user-supplied input used in PHP include or require statements, which allows an attacker to specify arbitrary files to be included and executed by the server. This can lead to Local File Inclusion (LFI) or Remote File Inclusion, depending on the attack vector. Successful exploitation enables an attacker to execute arbitrary PHP code remotely, potentially leading to full system compromise, data theft, defacement, or pivoting within the network. The vulnerability was reserved in early 2026 and published in March 2026, with no CVSS score assigned yet and no known exploits in the wild. The affected product is a popular WordPress theme, which increases the attack surface due to widespread use. The lack of available patches at the time of publication necessitates immediate mitigation efforts by users of the theme. This vulnerability is critical because it allows unauthenticated remote attackers to execute code on vulnerable servers, bypassing typical security controls.

The impact of CVE-2026-22446 is significant for organizations using the Select-Themes Prowess WordPress theme. Exploitation can lead to remote code execution, allowing attackers to take full control of the affected web server. This can result in data breaches, website defacement, malware distribution, and use of the compromised server as a pivot point for further attacks within the internal network. The confidentiality, integrity, and availability of affected systems are all at risk. Organizations relying on this theme for their websites or web applications face reputational damage, financial loss, and potential regulatory penalties if sensitive data is exposed. The widespread use of WordPress and the popularity of themes like Prowess increase the likelihood of targeted attacks. Even though no exploits are currently known in the wild, the vulnerability's nature makes it an attractive target for attackers once exploit code becomes available.

1. Immediately update the Select-Themes Prowess theme to the latest version once a patch is released by the vendor. 2. Until a patch is available, disable or remove the vulnerable theme from production environments. 3. Implement Web Application Firewall (WAF) rules to detect and block suspicious requests attempting to exploit file inclusion vulnerabilities, such as those containing remote URLs or directory traversal sequences in parameters. 4. Restrict PHP configuration settings by disabling allow_url_include and allow_url_fopen to prevent inclusion of remote files. 5. Conduct code audits to identify and sanitize all user inputs used in include/require statements, ensuring strict validation and whitelisting of allowed filenames. 6. Monitor web server logs for unusual access patterns or attempts to exploit file inclusion. 7. Employ least privilege principles for web server processes to limit the impact of potential compromise. 8. Regularly back up website data and configurations to enable quick recovery in case of an incident.