CVE-2025-11452 identifies a SQL Injection vulnerability in the Asgaros Forum plugin for WordPress, affecting all versions up to and including 3.1.0. The root cause is insufficient escaping and lack of prepared statements when processing the user-supplied 'asgarosforum_unread_exclude' cookie parameter. This allows an unauthenticated attacker to append arbitrary SQL commands to existing queries executed by the plugin. Exploitation can lead to unauthorized disclosure of sensitive information stored in the backend database, such as user credentials, private messages, or other forum data. The vulnerability does not require authentication or user interaction, increasing its risk profile. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) reflects network attack vector, low attack complexity, no privileges or user interaction required, unchanged scope, and high confidentiality impact. No known exploits have been reported in the wild yet, but the vulnerability's nature and ease of exploitation make it a significant threat to WordPress sites using this plugin. The lack of patch links suggests a fix is pending or not yet publicly available, emphasizing the need for interim mitigations.

For European organizations, this vulnerability poses a substantial risk to the confidentiality of data hosted on WordPress sites using the Asgaros Forum plugin. Sensitive user data, internal communications, or proprietary information stored in the forum database could be exposed to attackers. This could lead to reputational damage, regulatory non-compliance (e.g., GDPR violations due to data breaches), and potential financial losses. Public-facing forums are particularly vulnerable as the attack requires no authentication and can be launched remotely. The impact is heightened for organizations relying on these forums for customer engagement, support, or internal collaboration. Additionally, data leakage could facilitate further attacks such as phishing or social engineering targeting European users. Although integrity and availability are not directly impacted, the confidentiality breach alone warrants urgent attention.

Immediate mitigation steps include disabling the Asgaros Forum plugin if feasible until a patch is released. Organizations should monitor for updates from the vendor and apply patches promptly once available. In the interim, deploying a web application firewall (WAF) with custom rules to detect and block malicious SQL injection payloads targeting the 'asgarosforum_unread_exclude' cookie can reduce risk. Implementing strict input validation and sanitization at the application level, if possible, is recommended. Regularly auditing WordPress plugins for vulnerabilities and minimizing the use of unnecessary or unsupported plugins can reduce attack surface. Additionally, monitoring logs for suspicious requests involving the vulnerable cookie parameter can help detect exploitation attempts. Organizations should also ensure database user permissions follow the principle of least privilege to limit potential data exposure.