CVE-2025-12264 is a cross-site scripting vulnerability identified in Wisencode software versions up to 20251012. The flaw exists in the Create Support Ticket Handler component, specifically within the /support-ticket/create endpoint, where the 'Message' parameter is improperly sanitized. This allows an attacker to inject malicious JavaScript code that executes in the context of users who view the crafted support ticket messages. The vulnerability is remotely exploitable without requiring authentication, though user interaction is necessary to trigger the malicious script, such as viewing or interacting with the support ticket containing the injected payload. The vendor was notified early but has not issued any response or patch, leaving the vulnerability unmitigated. The CVSS 4.0 base score is 5.1 (medium severity), reflecting the network attack vector, low attack complexity, no privileges required, but requiring user interaction and resulting in limited integrity impact and no confidentiality or availability impact. While no known exploits are currently reported in the wild, the lack of vendor response increases the risk of future exploitation. This vulnerability can lead to session hijacking, theft of sensitive information, or social engineering attacks targeting users of the Wisencode support ticket system. Organizations relying on Wisencode should assess their exposure and implement compensating controls until a patch is available.

For European organizations, this vulnerability poses a risk primarily to the confidentiality and integrity of user sessions and data accessed through the Wisencode support ticket system. Attackers exploiting this XSS flaw could hijack user sessions, steal authentication tokens, or conduct phishing attacks by injecting malicious scripts that manipulate the user interface or capture input data. This can lead to unauthorized access to sensitive support ticket information or broader system compromise if the support portal integrates with other internal systems. The impact is heightened in sectors where customer support platforms handle sensitive personal or business data, such as finance, healthcare, and government services. Additionally, reputational damage and regulatory consequences under GDPR could arise if personal data is compromised. Since exploitation requires user interaction, social engineering campaigns targeting support staff or customers could be used to trigger the attack. The absence of vendor patches increases the window of exposure, necessitating immediate risk mitigation by affected organizations.

European organizations using Wisencode should implement the following specific mitigations: 1) Employ web application firewalls (WAFs) with custom rules to detect and block malicious payloads targeting the /support-ticket/create endpoint, focusing on suspicious script tags or event handlers in the 'Message' parameter. 2) Conduct input validation and output encoding on the server side as a compensating control if source code access or customization is possible, sanitizing user inputs to neutralize script injections. 3) Educate support staff and users about the risks of interacting with suspicious support tickets and encourage vigilance against unexpected or unusual messages. 4) Monitor logs and network traffic for anomalous requests or patterns indicative of exploitation attempts. 5) Isolate the support ticket system from critical internal networks to limit lateral movement if compromise occurs. 6) Engage with Wisencode vendor or community forums to track any forthcoming patches or updates. 7) Consider deploying Content Security Policy (CSP) headers to restrict script execution origins and reduce the impact of XSS attacks. These targeted actions go beyond generic advice by focusing on the specific vulnerable component and attack vector.