CVE-2024-13691 is a vulnerability identified in the Uncode WordPress theme, specifically in the 'uncode_recordMedia' function, which suffers from improper input validation (CWE-20). This flaw exists in all versions up to and including 2.9.1.6. The vulnerability enables authenticated attackers with at least Subscriber-level privileges to perform arbitrary file read operations on the server hosting the WordPress site. The root cause is insufficient sanitization or validation of user-supplied input that is used to access files, allowing traversal or direct file path manipulation. Exploitation requires authentication but no additional user interaction, and it can be conducted remotely over the network. The impact is primarily on confidentiality, as attackers can access sensitive files such as configuration files, database credentials, or other protected data stored on the server. The vulnerability does not affect the integrity or availability of the system. The CVSS v3.1 base score is 6.5, with vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N, indicating network attack vector, low attack complexity, privileges required, no user interaction, unchanged scope, high confidentiality impact, and no impact on integrity or availability. No public exploits have been reported yet, but the vulnerability is publicly disclosed and should be considered a moderate risk for affected sites. The Uncode theme is widely used in WordPress sites, making this vulnerability relevant to many organizations relying on this theme for their web presence.

The primary impact of CVE-2024-13691 is the unauthorized disclosure of sensitive server files, which can lead to exposure of critical information such as database credentials, configuration files, or private keys. This can facilitate further attacks, including privilege escalation, data breaches, or lateral movement within the compromised environment. Organizations worldwide that use the Uncode WordPress theme are at risk, especially if they allow Subscriber-level or higher access to untrusted users or if their user accounts are compromised. The vulnerability does not directly affect system integrity or availability but compromises confidentiality, which can have severe downstream consequences. The ease of exploitation is moderate due to the requirement for authenticated access, but the low attack complexity and network accessibility increase the risk. The scope is limited to sites running the vulnerable theme versions, but given the popularity of WordPress and Uncode, a significant number of websites could be affected. This vulnerability could be leveraged in targeted attacks against organizations with sensitive web assets or in broader campaigns exploiting compromised user accounts.

1. Upgrade the Uncode WordPress theme to a version that patches CVE-2024-13691 as soon as it becomes available. 2. Restrict Subscriber-level and higher privileges to trusted users only, minimizing the risk of exploitation by unauthorized or compromised accounts. 3. Implement strict input validation and sanitization at the application level to prevent arbitrary file access, especially in custom or third-party themes and plugins. 4. Employ web application firewalls (WAFs) with rules designed to detect and block attempts to exploit file read vulnerabilities. 5. Monitor server logs and WordPress activity logs for unusual file access patterns or attempts to access sensitive files. 6. Use the principle of least privilege for file system permissions to limit the files accessible by the web server process. 7. Conduct regular security audits and vulnerability scans focusing on WordPress themes and plugins. 8. Educate site administrators and users about the risks of privilege misuse and encourage strong authentication practices, including multi-factor authentication (MFA).