CVE-2025-61550 identifies a persistent Cross-Site Scripting (XSS) vulnerability in edu Business Solutions Print Shop Pro WebDesk version 18.34. The flaw exists in the ctl00_Content01_fieldValue parameter of the /psp/appNet/TemplateOrder/TemplatePreview.aspx endpoint, where user-supplied input is stored and later rendered in HTML pages without proper output encoding or sanitization. This lack of proper input handling allows an attacker with authenticated access to inject arbitrary JavaScript code that persists in the application and executes in the context of other users’ sessions when they view the affected pages. The vulnerability is classified under CWE-79, which covers improper neutralization of input during web page generation. According to the CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N), the attack can be launched remotely over the network with low attack complexity, requires privileges (authenticated user), and user interaction (victim must access the malicious content). The scope is changed (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. The impact affects confidentiality and integrity by allowing session hijacking, credential theft, or unauthorized actions via script execution, but does not impact availability. No public exploits are currently known, and no patches have been linked yet. This vulnerability is significant for organizations using this version of Print Shop Pro WebDesk, especially where multiple users access the system and templates are shared or previewed.

For European organizations, this vulnerability poses a risk primarily to confidentiality and integrity of user sessions and data within the Print Shop Pro WebDesk environment. Attackers could leverage this XSS to steal session cookies, perform actions on behalf of other users, or inject malicious content that could lead to further compromise. Organizations in sectors such as education, government, and commercial print services that rely on this software for managing print workflows are particularly vulnerable. The persistent nature of the XSS increases the risk of widespread impact across multiple users. Although availability is not directly affected, the breach of confidentiality and integrity could lead to reputational damage, regulatory penalties under GDPR for data breaches, and operational disruptions. The requirement for authenticated access limits the attack surface but does not eliminate risk, especially if user credentials are weak or compromised. The vulnerability could also be used as a foothold for more advanced attacks within the network.

To mitigate CVE-2025-61550, organizations should first verify if they are running edu Business Solutions Print Shop Pro WebDesk version 18.34 or earlier and prioritize upgrading to a patched version once available. In the absence of an official patch, implement strict input validation and output encoding on the ctl00_Content01_fieldValue parameter to neutralize malicious scripts. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. Limit user privileges to reduce the number of users who can inject content, and enforce strong authentication mechanisms to prevent credential compromise. Conduct regular security awareness training to reduce the risk of social engineering attacks that might facilitate exploitation. Monitor logs and web traffic for unusual activity indicative of XSS exploitation attempts. Consider isolating the affected application in a segmented network zone to limit lateral movement if compromised. Finally, maintain an incident response plan tailored to web application attacks to quickly address any exploitation.