CVE-2025-58233 is a medium severity vulnerability classified under CWE-79, indicating an improper neutralization of input during web page generation, commonly known as Cross-site Scripting (XSS). Specifically, this vulnerability affects the Guaven Labs SQL Chart Builder product, versions up to and including 2.3.7.2. The vulnerability is DOM-based XSS, meaning that the malicious script is executed as a result of unsafe client-side code processing user input within the Document Object Model (DOM) environment, rather than server-side injection. This type of XSS occurs when the application’s client-side scripts write data provided by the user to the DOM without proper sanitization or encoding, allowing an attacker to inject and execute arbitrary JavaScript code in the context of the victim’s browser session. The CVSS v3.1 score of 6.5 reflects a medium severity level, with the vector indicating that the attack can be performed remotely (AV:N), requires low attack complexity (AC:L), requires privileges (PR:L), and user interaction (UI:R). The scope is changed (S:C), meaning the vulnerability affects resources beyond the security scope of the vulnerable component. The impact includes low confidentiality, integrity, and availability impacts, consistent with typical XSS risks such as session hijacking, defacement, or redirection to malicious sites. No known exploits are currently reported in the wild, and no patches are linked yet, indicating that remediation may still be pending or in progress. The vulnerability was reserved in late August 2025 and published in September 2025, suggesting it is a recent discovery.

For European organizations using Guaven Labs SQL Chart Builder, this vulnerability poses a risk primarily to web application security and user trust. Exploitation could allow attackers to execute arbitrary scripts in the browsers of users interacting with affected dashboards or reports, potentially leading to session hijacking, theft of sensitive data, or unauthorized actions performed on behalf of legitimate users. This can compromise confidentiality and integrity of data visualized or managed through the application. Given the medium severity and requirement for user interaction and some privileges, the threat is moderate but significant in environments where SQL Chart Builder is integrated into critical business intelligence or data analytics workflows. The impact is heightened in sectors with strict data protection regulations such as GDPR, where data breaches or unauthorized data access can lead to legal and financial penalties. Additionally, compromised dashboards could be used to spread misinformation or disrupt decision-making processes. The lack of known exploits currently reduces immediate risk but does not eliminate the potential for future attacks, especially as the vulnerability becomes publicly known.

Organizations should prioritize applying any forthcoming patches from Guaven Labs as soon as they become available. In the interim, specific mitigations include: 1) Implementing strict Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of DOM-based XSS. 2) Conducting a thorough review of all client-side code in the SQL Chart Builder integration to identify and sanitize or encode any user-controllable inputs that are reflected in the DOM. 3) Employing web application firewalls (WAFs) with rules tuned to detect and block XSS payloads targeting the affected application. 4) Educating users to be cautious with links and inputs related to the SQL Chart Builder interface to reduce the risk of social engineering attacks that require user interaction. 5) Monitoring application logs and user behavior for anomalies that could indicate exploitation attempts. 6) Considering isolating or sandboxing the SQL Chart Builder application within the network to limit the scope of potential compromise. These measures go beyond generic advice by focusing on immediate protective controls tailored to the nature of DOM-based XSS and the specific application context.