CVE-2026-1249 is a Server-Side Request Forgery (SSRF) vulnerability identified in the Sonaar MP3 Audio Player – Music Player, Podcast Player & Radio plugin for WordPress, specifically affecting versions 5.3 through 5.10. The vulnerability resides in the 'load_lyrics_ajax_callback' function, which processes AJAX requests to load song lyrics. An attacker with authenticated author-level access or higher can exploit this flaw to induce the server to make arbitrary HTTP requests to internal or external systems. SSRF vulnerabilities allow attackers to bypass network restrictions and access internal services that are not exposed to the internet, potentially leading to information disclosure or further internal network compromise. The vulnerability does not require user interaction beyond authentication and can be triggered remotely. The CVSS v3.1 base score is 5.0, reflecting medium severity, with an attack vector of network, low attack complexity, and requiring privileges. The scope is changed, indicating that the vulnerability affects resources beyond the initially vulnerable component. Confidentiality impact is low, while integrity and availability impacts are none. No public exploits have been reported yet, and no official patches have been linked at the time of publication. The vulnerability was reserved on January 20, 2026, and published on February 14, 2026. Given the plugin's use in WordPress environments, this vulnerability could be leveraged to perform internal reconnaissance or access sensitive internal endpoints, especially in environments where internal services are not otherwise accessible externally.

The primary impact of CVE-2026-1249 is the potential exposure of internal network resources and sensitive information through SSRF attacks. Attackers with author-level access can leverage this vulnerability to send crafted requests from the vulnerable web server to internal services, which may include databases, internal APIs, or cloud metadata services. This can lead to unauthorized information disclosure, such as configuration details, credentials, or other sensitive data stored internally. While the vulnerability does not directly compromise data integrity or availability, the information gained could be used to facilitate further attacks, including privilege escalation or lateral movement within the network. Organizations running WordPress sites with this plugin installed are at risk, particularly those with complex internal network architectures or sensitive internal services. The requirement for authenticated author-level access limits the attack surface but does not eliminate risk, especially in environments with multiple contributors or weak access controls. The absence of known exploits in the wild reduces immediate risk but does not preclude future exploitation. Overall, the vulnerability poses a medium risk that could be leveraged in targeted attacks against organizations relying on this plugin.

To mitigate CVE-2026-1249, organizations should first verify if their WordPress installations use the Sonaar MP3 Audio Player plugin versions 5.3 to 5.10. If so, immediate steps include restricting author-level user privileges to trusted personnel only, minimizing the number of users with such access. Until an official patch is released, consider disabling or removing the plugin to eliminate the attack vector. If disabling the plugin is not feasible, implement web application firewall (WAF) rules to monitor and block suspicious AJAX requests targeting the 'load_lyrics_ajax_callback' endpoint. Network segmentation should be enforced to limit the web server's ability to reach sensitive internal services, reducing the impact of SSRF exploitation. Additionally, internal services should implement strict access controls and authentication to prevent unauthorized access even if SSRF occurs. Regularly monitor logs for unusual outbound requests originating from the web server. Once a patch is available, apply it promptly. Finally, conduct security awareness training for users with author-level access to recognize and prevent potential abuse.