CVE-2025-49307 is a high-severity vulnerability classified under CWE-98, which pertains to improper control of filenames used in include or require statements within PHP programs. Specifically, this vulnerability affects the Magazine3 WP Multilang plugin for WordPress, versions up to and including 2.4.19. The flaw allows for PHP Local File Inclusion (LFI), a type of vulnerability where an attacker can manipulate the file path used in include or require statements to execute arbitrary files on the server. Although the description mentions 'PHP Remote File Inclusion,' the actual issue is local file inclusion, which can still lead to significant security risks. The vulnerability arises because the plugin does not properly validate or sanitize user-supplied input that determines which files are included, enabling attackers with low privileges to include sensitive files from the server. The CVSS v3.1 score is 7.5, indicating a high severity level, with the vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H. This means the attack can be performed remotely over the network but requires low privileges and high attack complexity, with no user interaction needed. The impact affects confidentiality, integrity, and availability, as attackers can read sensitive files, potentially modify application behavior, or cause denial of service. No known exploits in the wild have been reported yet, and no patches are currently linked, suggesting that organizations using this plugin should prioritize mitigation and monitoring. The vulnerability was published on June 6, 2025, and was reserved two days earlier, indicating recent discovery and disclosure.

For European organizations using WordPress sites with the Magazine3 WP Multilang plugin, this vulnerability poses a significant risk. Exploitation could lead to unauthorized disclosure of sensitive information such as configuration files, credentials, or internal data, compromising confidentiality. Attackers might also alter application logic or cause service disruptions, impacting integrity and availability. Given the plugin's role in managing multilingual content, exploitation could affect websites that serve diverse European audiences, potentially damaging reputation and trust. Organizations in sectors with strict data protection requirements, such as finance, healthcare, and government, face heightened risks due to potential breaches of personal or sensitive data under GDPR. The requirement for low privileges means that even compromised or low-level user accounts could be leveraged to escalate attacks, increasing the threat surface. The high attack complexity somewhat limits exploitation but does not eliminate risk, especially if attackers gain some foothold in the environment. The absence of known exploits in the wild provides a window for proactive defense, but also means that attackers may develop exploits soon after disclosure.

1. Immediate assessment of all WordPress installations for the presence of the Magazine3 WP Multilang plugin, particularly versions up to 2.4.19. 2. If possible, disable or remove the plugin until a security patch or update is released by the vendor. 3. Implement strict input validation and sanitization on any user-supplied parameters that influence file inclusion paths, either via custom code or web application firewalls (WAFs) with rules targeting LFI patterns. 4. Restrict file system permissions for the web server user to limit access to sensitive files that could be included maliciously. 5. Monitor web server and application logs for suspicious requests that attempt to manipulate include parameters or access unexpected files. 6. Employ network-level protections such as intrusion detection/prevention systems (IDS/IPS) tuned to detect LFI attempts. 7. Prepare incident response plans to quickly address potential exploitation, including backups and recovery procedures. 8. Stay updated with vendor communications for patches or official mitigations and apply them promptly once available. 9. Consider deploying application-layer sandboxing or containerization to limit the impact of any successful exploit. 10. Educate developers and administrators on secure coding practices related to file inclusion and input validation to prevent similar vulnerabilities in custom plugins or themes.