CVE-2025-61549 is a reflected Cross-Site Scripting (XSS) vulnerability identified in edu Business Solutions Print Shop Pro WebDesk version 18.34. The vulnerability resides in the LoginID parameter of the /PSP/app/web/reg/reg_display.asp endpoint, where user-supplied input is not properly sanitized or encoded before being reflected in the HTTP response. This lack of input validation and output encoding allows attackers to inject malicious JavaScript code that executes within the victim's browser session. The attack vector involves crafting a specially formed URL or HTTP request containing the malicious payload in the LoginID parameter, which when accessed by a victim, executes the injected script. This can lead to session hijacking, theft of authentication tokens, redirection to malicious sites, or other client-side attacks. The vulnerability does not require authentication or user interaction beyond visiting a malicious link, increasing its exploitation potential. No CVSS score has been assigned yet, and no public exploits have been reported, but the vulnerability is publicly disclosed and should be considered a significant risk. The affected software is used primarily in print shop management environments, which may handle sensitive business and customer data. The absence of patches or official mitigation guidance at this time necessitates immediate defensive measures such as input validation, output encoding, and deployment of web application firewalls to detect and block exploit attempts.

For European organizations, exploitation of this XSS vulnerability could compromise the confidentiality and integrity of user sessions within the Print Shop Pro WebDesk application. Attackers could steal session cookies, impersonate legitimate users, or perform unauthorized actions within the affected web application. This could lead to unauthorized access to sensitive business data, disruption of print shop operations, and potential reputational damage. Given the web-based nature of the vulnerability, it could also serve as a vector for delivering further malware or phishing attacks targeting employees or customers. Organizations relying on this software for critical business processes may face operational disruptions and increased risk of data breaches. The impact is heightened in sectors where print shop services are integral to business workflows, such as publishing, marketing, and retail. Additionally, the vulnerability could be leveraged as part of broader attack campaigns targeting supply chains or service providers in Europe.

To mitigate CVE-2025-61549, organizations should implement strict input validation on the LoginID parameter to ensure only expected characters are accepted. Employ robust output encoding or escaping techniques to neutralize any user-supplied data before reflecting it in HTTP responses. Deploy web application firewalls (WAFs) with rules specifically designed to detect and block XSS payloads targeting the vulnerable endpoint. Monitor web server logs and application behavior for unusual or suspicious requests involving the LoginID parameter. Educate users about the risks of clicking on untrusted links and encourage the use of security-aware browsing practices. Coordinate with edu Business Solutions to obtain patches or updates addressing this vulnerability as soon as they become available. In the interim, consider isolating or restricting access to the affected web application to trusted networks or VPNs to reduce exposure. Regularly review and update security policies to include XSS prevention best practices tailored to the organization's environment.