CVE-2025-65837 identifies a Cross Site Scripting (XSS) vulnerability in the Content Search module of PublicCMS version V5.202506.b. XSS vulnerabilities occur when an application does not properly sanitize user input, allowing attackers to inject malicious scripts into web pages viewed by other users. In this case, the Content Search module fails to adequately validate or encode search input parameters, enabling injection of arbitrary JavaScript code. When a victim user accesses a crafted search URL or interacts with manipulated content, the malicious script executes within their browser context. This can lead to theft of session cookies, redirection to phishing sites, or unauthorized actions performed with the victim's privileges. The vulnerability does not require authentication, increasing its risk profile, but does require user interaction to trigger the payload. No CVSS score has been assigned yet, and no public patches or known exploits are reported at this time. However, the presence of this vulnerability in a widely used CMS module highlights the importance of prompt remediation. The lack of a patch link suggests that a fix may still be pending or in development. Organizations relying on PublicCMS for content management and search functionality should monitor for updates and consider interim mitigations such as input validation and Content Security Policy (CSP) enforcement.

For European organizations, exploitation of this XSS vulnerability could compromise the confidentiality and integrity of user sessions and data. Attackers could hijack authenticated sessions, steal sensitive information, or conduct phishing attacks leveraging the trusted domain. This is particularly critical for organizations handling personal data under GDPR, as breaches could lead to regulatory penalties and reputational damage. Public-facing websites using the vulnerable Content Search module are at risk of delivering malicious content to visitors, potentially affecting customers, partners, and employees. The availability impact is generally low for XSS, but indirect effects such as loss of user trust or forced downtime for remediation can be significant. The ease of exploitation without authentication and the widespread use of CMS platforms in Europe amplify the threat. Organizations in sectors such as government, finance, healthcare, and e-commerce, which often rely on CMS platforms, may face higher risks due to the sensitivity of their data and services.

1. Monitor PublicCMS official channels for patches addressing CVE-2025-65837 and apply them promptly once available. 2. Implement strict input validation and output encoding on all user-supplied data in the Content Search module to prevent script injection. 3. Deploy a robust Content Security Policy (CSP) to restrict execution of unauthorized scripts and mitigate impact of XSS attacks. 4. Use web application firewalls (WAFs) with rules targeting XSS attack patterns to detect and block malicious requests. 5. Educate users about the risks of clicking untrusted links and encourage cautious browsing behavior. 6. Conduct regular security assessments and penetration testing focused on CMS modules to identify and remediate similar vulnerabilities proactively. 7. If patching is delayed, consider disabling or restricting access to the vulnerable Content Search functionality temporarily to reduce exposure.