CVE-2025-52203 is a stored cross-site scripting (XSS) vulnerability identified in the DevaslanPHP project-management software version 1.2.4. The vulnerability is located in the Ticket Name field, which does not properly sanitize or validate user-supplied input. An authenticated attacker can exploit this flaw by injecting malicious JavaScript code into the Ticket Name field. This malicious payload is then stored persistently in the application's database. When a legitimate user logs in and is redirected automatically to the Dashboard panel, the stored script executes within the user's browser context. This execution can lead to session hijacking, credential theft, unauthorized actions on behalf of the user, or the delivery of further malware. Since the vulnerability requires authentication, the attacker must have valid credentials or have compromised an account to inject the payload. However, the impact is significant because the malicious script runs in the context of any user who views the Dashboard after login, potentially affecting multiple users within the organization. The lack of a CVSS score indicates this is a newly published vulnerability with no formal severity rating yet. No known public exploits have been reported to date, but the nature of stored XSS vulnerabilities makes them attractive targets for attackers aiming to escalate privileges or move laterally within an organization.

For European organizations using DevaslanPHP project-management software, this vulnerability poses a risk to the confidentiality and integrity of user sessions and data. Attackers could leverage the stored XSS to steal session cookies, enabling unauthorized access to sensitive project management data, internal communications, or confidential documents. This could lead to data breaches, intellectual property theft, or disruption of project workflows. Additionally, the execution of arbitrary scripts could facilitate phishing attacks or the deployment of ransomware payloads within the corporate network. The requirement for authentication limits exposure to insiders or compromised accounts, but given the collaborative nature of project management tools, multiple users could be affected once the malicious script is stored. The vulnerability could also undermine user trust and compliance with data protection regulations such as GDPR if personal or sensitive data is exposed or manipulated.

To mitigate this vulnerability, organizations should immediately apply any available patches or updates from the vendor once released. In the absence of a patch, implement strict input validation and output encoding on the Ticket Name field to neutralize malicious scripts. Employ a web application firewall (WAF) with rules designed to detect and block XSS payloads targeting the affected endpoint. Conduct regular security audits and code reviews focusing on input sanitization practices. Limit user privileges to reduce the risk of unauthorized script injection, ensuring only trusted users can create or modify tickets. Educate users about the risks of XSS and encourage reporting of suspicious behavior. Additionally, implement Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. Monitor logs for unusual activity related to ticket creation or dashboard access to detect potential exploitation attempts early.