CVE-2025-10190 is a stored cross-site scripting vulnerability classified under CWE-79, affecting the WP Easy Toggles plugin for WordPress. This vulnerability exists due to insufficient input sanitization and output escaping of user-supplied attributes in the plugin's 'toggles' shortcode. Authenticated attackers with contributor-level access or higher can exploit this flaw by injecting arbitrary JavaScript code into pages using the shortcode. When other users access these pages, the malicious scripts execute in their browsers, potentially compromising session tokens, redirecting users, or performing actions on behalf of the victim. The vulnerability affects all versions up to and including 1.9.0 of the plugin. The CVSS 3.1 base score is 6.4, reflecting a medium severity with network attack vector, low attack complexity, requiring privileges (PR:L), no user interaction, and a scope change. No known public exploits have been reported yet, but the vulnerability's nature and ease of exploitation by authenticated users make it a significant risk for affected WordPress sites. The vulnerability was published on October 11, 2025, and no official patches have been linked yet, emphasizing the need for immediate mitigation steps by site administrators.

The impact of this vulnerability is primarily on the confidentiality and integrity of affected WordPress sites. Successful exploitation allows attackers to execute arbitrary scripts in the context of the victim's browser, which can lead to session hijacking, theft of sensitive information, defacement, or further exploitation such as privilege escalation or malware distribution. Since the attack requires contributor-level access, the threat is elevated in environments where contributor roles are granted to untrusted or semi-trusted users. The scope change in the CVSS vector indicates that the vulnerability can affect resources beyond the attacker's privileges, potentially impacting site administrators or other users. While availability is not directly impacted, the reputational damage and potential data breaches can be severe. Organizations relying on WP Easy Toggles for content toggling functionality face risks of compromised user trust and potential regulatory consequences if user data is exposed.

1. Immediately review and restrict contributor-level access to trusted users only, minimizing the risk of malicious input. 2. Implement strict input validation and output escaping for any user-generated content, especially in shortcodes or plugins that accept user attributes. 3. Monitor WordPress sites for unusual script injections or unexpected behavior on pages using the 'toggles' shortcode. 4. Use Web Application Firewalls (WAFs) with custom rules to detect and block suspicious payloads targeting the shortcode parameters. 5. Until an official patch is released, consider disabling the WP Easy Toggles plugin or removing the 'toggles' shortcode from active content. 6. Educate site administrators and contributors about the risks of XSS and safe content practices. 7. Regularly update WordPress core and plugins to incorporate security fixes promptly once available. 8. Conduct security audits and penetration testing focusing on user input handling in plugins.