CVE-2026-0680 is a stored Cross-Site Scripting (XSS) vulnerability identified in the Real Post Slider Lite plugin for WordPress, affecting all versions up to and including 2.4. The vulnerability arises from improper neutralization of input during web page generation (CWE-79), specifically due to insufficient input sanitization and output escaping in the plugin's settings interface. This flaw allows an authenticated attacker with administrator-level privileges to inject arbitrary JavaScript code into pages managed by the plugin. The malicious script is stored persistently and executes whenever any user accesses the infected page. Exploitation requires a multi-site WordPress installation where the unfiltered_html capability is disabled, which restricts the attack surface but still leaves many installations vulnerable. The vulnerability does not require user interaction beyond visiting the compromised page and does not affect single-site installations. The CVSS v3.1 base score is 4.4, reflecting a medium severity with network attack vector, high attack complexity, and high privileges required. The impact primarily affects confidentiality and integrity, with no direct availability impact. No public exploits have been reported yet, and no patches are currently linked, indicating that mitigation may rely on configuration changes or plugin updates once available.

For European organizations, this vulnerability poses a moderate risk, especially for those running multi-site WordPress environments with the Real Post Slider Lite plugin installed. Successful exploitation could lead to session hijacking, credential theft, or unauthorized actions performed in the context of affected users, potentially including administrators. This could compromise sensitive data confidentiality and integrity. Given the requirement for administrator-level access to exploit, the threat is more relevant in scenarios where internal users or compromised admin accounts exist. The multi-site limitation narrows the scope but many European enterprises and service providers use multi-site WordPress setups for managing multiple domains or clients. The lack of known exploits reduces immediate risk but also means organizations should proactively address the vulnerability before attackers develop weaponized code. The vulnerability could be leveraged in targeted attacks against high-value websites, including government portals, e-commerce platforms, or media outlets prevalent in Europe.

1. Immediately audit WordPress installations to identify multi-site environments using the Real Post Slider Lite plugin, especially versions up to 2.4. 2. Restrict administrator access strictly and review user privileges to minimize the risk of insider threats or compromised admin accounts. 3. Disable or limit the use of the vulnerable plugin until a vendor patch or update is released. 4. If disabling the plugin is not feasible, consider implementing Web Application Firewall (WAF) rules to detect and block suspicious script injection attempts targeting plugin settings. 5. Enable Content Security Policy (CSP) headers to reduce the impact of injected scripts by restricting script sources. 6. Monitor logs for unusual administrator activity or unexpected changes in plugin settings. 7. Educate administrators about the risks of XSS and the importance of secure plugin management. 8. Stay updated with vendor announcements for patches or security advisories related to this vulnerability.