CVE-2026-22515 identifies a PHP Local File Inclusion (LFI) vulnerability in the AncoraThemes VegaDays WordPress theme, specifically due to improper control over filenames used in PHP include or require statements. This vulnerability arises when user-supplied input is not properly sanitized or validated before being passed to PHP's include or require functions, allowing an attacker to manipulate the filename parameter. As a result, an attacker can include arbitrary local files from the server, potentially exposing sensitive information such as configuration files, password files, or other critical data. In some cases, if combined with other vulnerabilities or misconfigurations, this LFI can lead to remote code execution (RCE). The affected versions include all VegaDays releases up to and including version 1.2.0. The vulnerability was published on March 25, 2026, with no CVSS score assigned yet and no known exploits in the wild. The flaw stems from insufficient input validation and lack of secure coding practices in handling file inclusion mechanisms within the theme's PHP codebase. This vulnerability is particularly dangerous because it does not require authentication or user interaction, making it easier for remote attackers to exploit. The absence of a patch link indicates that a fix may not yet be publicly available, increasing the urgency for users to implement temporary mitigations or monitor for updates from AncoraThemes.

The impact of CVE-2026-22515 is significant for organizations using the VegaDays WordPress theme. Exploitation can lead to unauthorized disclosure of sensitive files, including configuration files containing database credentials or API keys, which can compromise the entire web application and backend systems. Attackers might also leverage this vulnerability to execute arbitrary code if they manage to include files containing malicious payloads or combine it with other vulnerabilities. This can result in full system compromise, data breaches, defacement, or use of the compromised server as a pivot point for further attacks within an organization's network. The vulnerability affects the confidentiality, integrity, and availability of affected systems. Since no authentication is required and exploitation does not need user interaction, the attack surface is broad, increasing the likelihood of automated scanning and exploitation attempts. Organizations relying on VegaDays for their websites or client projects face reputational damage, financial loss, and regulatory compliance risks if exploited.

To mitigate CVE-2026-22515, organizations should first check for any official patches or updates released by AncoraThemes and apply them immediately once available. In the absence of a patch, users should implement strict input validation and sanitization on any parameters used in include or require statements within the theme's PHP files, ensuring only allowed filenames or paths are accepted. Employing a web application firewall (WAF) with rules to detect and block LFI attack patterns can provide temporary protection. Disabling PHP functions like include, require, include_once, and require_once for user-controllable inputs through code review and hardening is recommended. Additionally, restricting file permissions on the server to prevent unauthorized file access and isolating the web server environment can limit the impact of exploitation. Monitoring web server logs for suspicious requests targeting file inclusion parameters is critical for early detection. Organizations should also consider migrating to alternative themes or custom solutions if VegaDays support is discontinued or patches are delayed.