CVE-2025-11289 identifies a cross-site scripting (XSS) vulnerability in the westboy CicadasCMS product, specifically in the Template Management Page component. The vulnerability resides in the Save function within the source file TemplateFileServiceImpl.java. This flaw allows an attacker to inject malicious scripts remotely by manipulating input parameters processed by the Save function. The vulnerability does not require authentication but does require user interaction, such as a victim clicking a crafted link or visiting a malicious page that triggers the injected script. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:H means high privileges required, but the description states remote initiation, so this may indicate some privilege needed), user interaction required (UI:P), no impact on confidentiality (C:N), low impact on integrity (I:L), no impact on availability (A:N), and no scope change. The vulnerability could allow attackers to execute arbitrary JavaScript in the context of the victim's browser, potentially leading to session hijacking, defacement, or other client-side attacks. However, the impact is limited by the requirement for user interaction and the scope of the affected functionality. No public exploit code is currently known to be active in the wild, and no official patches have been released at the time of publication. The vulnerability was publicly disclosed on October 5, 2025.

The primary impact of CVE-2025-11289 is the potential execution of malicious scripts within the browsers of users interacting with the vulnerable Template Management Page in CicadasCMS. This can lead to session hijacking, theft of cookies or credentials, and unauthorized actions performed on behalf of the user. Since the vulnerability requires user interaction, the risk is somewhat mitigated but still significant for targeted phishing or social engineering attacks. The integrity of the web application could be compromised if attackers inject scripts that alter page content or behavior. Confidentiality and availability impacts are minimal or nonexistent. Organizations relying on CicadasCMS for content management, especially those with multiple users or administrators accessing the template management interface, could face reputational damage, data leakage, or unauthorized changes if exploited. The lack of known active exploits reduces immediate risk but does not eliminate the threat, especially given public disclosure.

To mitigate CVE-2025-11289, organizations should implement strict input validation and output encoding on all user-supplied data processed by the Template Management Page, particularly in the Save function of TemplateFileServiceImpl.java. Employing a robust web application firewall (WAF) with rules targeting XSS payloads can provide an additional layer of defense. Restrict access to the template management interface to trusted administrators only, using strong authentication and network segmentation. Monitor logs for unusual activity related to template saving operations. Since no official patch is available, consider applying custom code fixes to sanitize inputs or temporarily disabling the vulnerable functionality if feasible. Educate users about phishing risks and the importance of not clicking on suspicious links. Stay alert for vendor updates or patches and apply them promptly once released. Conduct regular security assessments and penetration testing focused on web application vulnerabilities.