CVE-2025-48320 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability identified in the cuckoohello 百度分享按钮 (Baidu Share Button) plugin, affecting versions up to 1.0.6. This vulnerability allows an attacker to perform unauthorized actions on behalf of an authenticated user without their consent. Specifically, the CSRF flaw can be exploited to inject stored Cross-Site Scripting (XSS) payloads into the application. Stored XSS occurs when malicious scripts are permanently stored on the target server, such as in a database, and then executed in the context of users’ browsers when they access the affected content. The CVSS 3.1 score of 7.1 indicates a high severity, with an attack vector of network (remote exploitation), low attack complexity, no privileges required, but requiring user interaction (e.g., victim clicking a crafted link). The scope is changed, meaning the vulnerability affects resources beyond the initially vulnerable component. The impact affects confidentiality, integrity, and availability to a limited extent (partial loss). The vulnerability arises from inadequate validation of requests to the 百度分享按钮 plugin, allowing attackers to craft malicious requests that cause users’ browsers to execute unauthorized actions and store malicious scripts. While no known exploits are currently reported in the wild, the combination of CSRF leading to stored XSS significantly raises the risk of session hijacking, credential theft, defacement, or further exploitation within affected web applications. The absence of available patches at the time of publication increases the urgency for mitigation.

For European organizations, especially those operating websites or platforms that integrate the cuckoohello 百度分享按钮 plugin, this vulnerability poses a significant risk. Exploitation could lead to unauthorized actions performed under the guise of legitimate users, potentially compromising user accounts, leaking sensitive information, or defacing web content. Stored XSS payloads can facilitate persistent attacks against visitors, including session hijacking, malware distribution, or phishing. This is particularly concerning for sectors with high regulatory requirements such as finance, healthcare, and e-commerce, where data confidentiality and integrity are paramount. Additionally, the reputational damage from successful attacks exploiting this vulnerability could lead to loss of customer trust and legal consequences under GDPR if personal data is compromised. The network-exploitable nature means attackers can target vulnerable sites remotely without needing prior access, increasing the threat surface for European organizations using this plugin.

1. Immediate removal or disabling of the cuckoohello 百度分享按钮 plugin until a secure patched version is released. 2. Implement strict anti-CSRF tokens in all state-changing requests to ensure that only legitimate user actions are processed. 3. Conduct thorough input validation and output encoding to prevent injection of malicious scripts, mitigating stored XSS risks. 4. Employ Content Security Policy (CSP) headers to restrict execution of unauthorized scripts in browsers. 5. Monitor web application logs for unusual or suspicious requests indicative of CSRF or XSS attempts. 6. Educate users and administrators about the risks of clicking unsolicited links and the importance of keeping plugins up to date. 7. Regularly audit third-party plugins and dependencies for vulnerabilities and maintain an inventory to quickly respond to new threats. 8. Once available, promptly apply official patches from the vendor and verify their effectiveness through security testing.