CVE-2025-46457 is a Cross-Site Request Forgery (CSRF) vulnerability identified in the digontoahsan Wp Custom CMS Block plugin for WordPress, affecting versions up to 2.1. This vulnerability enables an attacker to perform unauthorized actions on behalf of an authenticated user by tricking them into submitting a crafted request without their consent. The exploitation of this CSRF flaw can lead to Stored Cross-Site Scripting (XSS), where malicious scripts are permanently injected into the CMS content managed by the plugin. Stored XSS can be particularly dangerous as it executes in the context of users who view the compromised content, potentially leading to session hijacking, credential theft, or further exploitation of the affected site. The vulnerability arises due to insufficient validation of requests and lack of proper anti-CSRF tokens or mechanisms within the plugin. Although no known exploits are currently reported in the wild, the presence of stored XSS as a consequence significantly raises the risk profile. The plugin is used within WordPress environments, which are widely deployed across various sectors, including European organizations. The vulnerability was reserved and published in April 2025, with no patch currently available, increasing the urgency for mitigation. Given the nature of the vulnerability, exploitation requires the victim to be authenticated and to interact with a maliciously crafted link or page, but no direct user interaction beyond that is necessary once the victim is logged in. The absence of a patch and the medium severity rating suggest that while the vulnerability is serious, it is not trivially exploitable without some level of user involvement and authenticated access.

For European organizations, this vulnerability poses a risk primarily to websites and web applications using the digontoahsan Wp Custom CMS Block plugin within WordPress. The impact includes unauthorized actions performed under the context of authenticated users, potentially leading to persistent XSS attacks. This can compromise the confidentiality of user data, integrity of website content, and availability if the injected scripts disrupt normal operations. Organizations in sectors such as government, finance, healthcare, and media, which often rely on WordPress for content management, could face reputational damage, data breaches, and regulatory non-compliance (e.g., GDPR violations) if exploited. The stored XSS could also be leveraged to propagate malware or conduct phishing attacks targeting site visitors or administrators. Since no known exploits are currently active, the immediate threat is moderate, but the lack of patches means the window for exploitation remains open. The requirement for authenticated access limits the scope somewhat but does not eliminate risk, especially in environments with many users or weak authentication controls. Overall, the vulnerability could facilitate targeted attacks against European organizations that rely on this plugin, especially those with high-value web assets or sensitive user data.

1. Immediate mitigation should include disabling or uninstalling the digontoahsan Wp Custom CMS Block plugin until a security patch is released. 2. Implement strict user access controls and limit the number of users with administrative or content editing privileges to reduce the attack surface. 3. Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious CSRF attempts and malicious payloads associated with stored XSS. 4. Educate users and administrators about the risks of clicking on unsolicited links while authenticated to the affected WordPress sites. 5. Monitor logs for unusual POST requests or content changes that could indicate exploitation attempts. 6. Regularly back up website content and configurations to enable rapid recovery if an attack occurs. 7. Once available, promptly apply vendor patches or updates addressing this vulnerability. 8. Consider implementing Content Security Policy (CSP) headers to mitigate the impact of XSS by restricting script execution sources. 9. Review and enhance anti-CSRF protections across the WordPress environment, including nonce validation and token verification for state-changing requests.