CVE-2025-10612 identifies a reflected Cross-site Scripting (XSS) vulnerability in giSoft Information Technologies' City Guide software, affecting versions prior to 1.4.45. The vulnerability stems from improper neutralization of input during web page generation, categorized under CWE-79. This flaw allows attackers to craft malicious URLs or inputs that, when processed by the vulnerable web application, cause the injection and execution of arbitrary JavaScript code in the context of the victim’s browser session. The attack vector is network-based (AV:N), requires no privileges (PR:N), but does require user interaction (UI:R), such as clicking a malicious link. The scope is changed (S:C), meaning the vulnerability can affect resources beyond the vulnerable component. The impact affects confidentiality and integrity partially (C:L/I:L), but availability is not impacted (A:N). No patches are currently linked, and no known exploits have been reported in the wild. The vulnerability could be leveraged to steal session cookies, perform actions on behalf of users, or deliver further malware payloads. Given the nature of City Guide as a web-based application likely used in tourism and municipal contexts, the vulnerability could be exploited to target end users or administrators accessing the platform. The CVSS 3.1 score of 6.1 reflects a medium severity rating, balancing the ease of exploitation with the limited but meaningful impact on data confidentiality and integrity.

For European organizations, the reflected XSS vulnerability in City Guide poses risks primarily to user confidentiality and data integrity. Attackers could hijack user sessions, steal sensitive information, or manipulate displayed content, potentially damaging trust and brand reputation. In sectors like tourism, municipal services, or local business directories where City Guide is deployed, this could disrupt user experience and lead to data leakage. While availability is not affected, the indirect consequences of compromised user accounts or injected malicious scripts could facilitate phishing or malware distribution campaigns targeting European users. The vulnerability’s requirement for user interaction limits automated mass exploitation but does not eliminate risk, especially in environments with high user traffic or less security awareness. Organizations handling personal data under GDPR must consider the compliance implications of such vulnerabilities and the potential for data breaches. The absence of known exploits provides a window for proactive mitigation before active attacks emerge.

European organizations should implement multiple layers of defense to mitigate this reflected XSS vulnerability. Immediate steps include: 1) Applying official patches or updates from giSoft once available; 2) Employing rigorous input validation and output encoding on all user-supplied data to prevent script injection; 3) Utilizing Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts; 4) Conducting security awareness training to educate users about the risks of clicking suspicious links; 5) Implementing web application firewalls (WAFs) with rules designed to detect and block reflected XSS payloads; 6) Regularly scanning the City Guide deployment with automated vulnerability scanners to detect unpatched instances; 7) Monitoring logs for unusual request patterns indicative of attempted exploitation; 8) Segregating the City Guide environment to limit lateral movement in case of compromise. These targeted measures go beyond generic advice by focusing on both technical controls and user behavior relevant to this specific vulnerability.