CVE-2026-28119 is a Local File Inclusion (LFI) vulnerability found in the axiomthemes Nirvana WordPress theme, affecting versions up to 2.6. The vulnerability stems from improper control over the filename parameter used in PHP include or require statements, allowing an attacker to manipulate the input to include arbitrary local files on the web server. This can lead to disclosure of sensitive files such as configuration files, password files, or source code, potentially exposing credentials or other critical information. In some cases, LFI vulnerabilities can be leveraged to execute arbitrary code if combined with other weaknesses, such as log poisoning or file upload flaws. The issue arises because the theme does not sufficiently validate or sanitize user input before using it in file inclusion functions, violating secure coding practices. No CVSS score has been assigned yet, and no known exploits are reported in the wild, but the vulnerability is publicly disclosed and considered serious. The affected product is a popular WordPress theme used by websites globally, increasing the risk of widespread exploitation. The lack of an official patch at the time of disclosure necessitates immediate mitigation steps by administrators. This vulnerability highlights the risks of insecure file inclusion in PHP applications, which remain a common attack vector in web security.

The impact of CVE-2026-28119 can be significant for organizations using the affected Nirvana theme. Successful exploitation can lead to unauthorized disclosure of sensitive server files, including configuration files containing database credentials or API keys, which compromises confidentiality. Attackers may also gain insights into the server environment and application logic, facilitating further attacks such as remote code execution or privilege escalation. This can result in data breaches, website defacement, or complete server takeover. The availability of the website might be affected if attackers disrupt normal operations or deploy malicious payloads. Since the vulnerability does not require authentication, any unauthenticated attacker with network access to the vulnerable web server can attempt exploitation, increasing the attack surface. Organizations relying on this theme for their public-facing websites or internal portals face reputational damage, regulatory penalties, and operational disruptions if exploited. The absence of known exploits currently provides a window for remediation, but the public disclosure increases the risk of future attacks.

1. Monitor for and apply official patches or updates from axiomthemes as soon as they are released to address this vulnerability. 2. In the absence of patches, implement web application firewall (WAF) rules to detect and block suspicious requests attempting to manipulate file inclusion parameters. 3. Restrict PHP include paths using configuration directives such as open_basedir to limit file inclusion to trusted directories only. 4. Review and harden theme code if possible, adding strict validation and sanitization of all user inputs used in file inclusion functions to prevent arbitrary file references. 5. Disable or restrict unnecessary PHP functions related to file inclusion if not required by the application. 6. Conduct regular security audits and penetration testing focused on file inclusion vulnerabilities. 7. Maintain secure backups and incident response plans to quickly recover in case of compromise. 8. Educate developers and administrators about secure coding practices related to file inclusion and input validation.