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 exists in the 'load_lyrics_ajax_callback' function, which processes AJAX requests to load song lyrics. This function fails to properly validate or restrict the URLs it fetches, allowing authenticated users with author-level access or higher to supply arbitrary URLs. As a result, attackers can coerce the server to make HTTP requests to internal or external resources on their behalf. This can be leveraged to query internal services that are otherwise inaccessible externally, potentially exposing sensitive information or enabling further attacks such as internal network reconnaissance. The vulnerability does not allow direct code execution or denial of service but compromises confidentiality by enabling unauthorized data access. The CVSS 3.1 base score is 5.0 (medium severity), reflecting the network attack vector, low attack complexity, and requirement for privileges but no user interaction. No public exploits have been reported yet, but the vulnerability's presence in a popular WordPress plugin makes it a notable risk. The lack of official patches at the time of reporting necessitates immediate mitigation steps by administrators.

For European organizations, this SSRF vulnerability poses a moderate risk primarily to confidentiality. Attackers with author-level access on affected WordPress sites can leverage the vulnerability to access internal services, potentially exposing sensitive internal APIs, metadata services, or other protected resources. This can lead to information leakage, which may facilitate further attacks such as privilege escalation or lateral movement within the network. Organizations running WordPress sites with the Sonaar MP3 Audio Player plugin, especially those hosting critical internal services behind firewalls, are at risk. The impact is heightened in environments where author-level accounts are shared or insufficiently controlled. While the vulnerability does not directly affect availability or integrity, the potential for internal reconnaissance and data exposure can have significant operational and compliance consequences, particularly under GDPR regulations concerning data protection and breach notification.

Administrators should immediately verify if their WordPress installations use the Sonaar MP3 Audio Player plugin versions 5.3 to 5.10 and restrict author-level access to trusted users only. Since no official patch is available yet, consider temporarily disabling or uninstalling the plugin to eliminate the attack surface. Implement strict network segmentation and firewall rules to limit the web server's ability to access sensitive internal resources. Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious SSRF patterns targeting the 'load_lyrics_ajax_callback' endpoint. Monitor logs for unusual outbound requests originating from the plugin's AJAX handler. Enforce strong authentication and role-based access control to minimize the number of users with author-level privileges. Once a patch is released, promptly apply it and verify the fix. Additionally, conduct internal network scans to identify any exposed services that could be targeted via SSRF and harden them accordingly.