CVE-2025-48139 is a security vulnerability classified under CWE-862, indicating a Missing Authorization issue in the product StyleAI developed by relentlo. This vulnerability allows unauthorized users to access functionality that should be protected by Access Control Lists (ACLs). Specifically, the flaw lies in the failure to properly enforce authorization checks on certain functions within StyleAI versions up to 1.0.4. The CVSS 3.1 base score of 6.5 (medium severity) reflects that the vulnerability can be exploited remotely over the network (AV:N) with low attack complexity (AC:L), requiring no privileges (PR:N) and no user interaction (UI:N). The impact affects confidentiality and integrity but not availability, meaning unauthorized actors could potentially view or modify sensitive data or operations without proper permissions, but cannot cause denial of service. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability is significant because missing authorization can lead to privilege escalation or unauthorized data access, undermining the trustworthiness of the application and potentially exposing sensitive AI-generated content or user data handled by StyleAI. Given that StyleAI is an AI-related product, unauthorized access could also lead to manipulation or misuse of AI functionalities, which might have downstream effects depending on the deployment context.

For European organizations using StyleAI, this vulnerability poses a risk of unauthorized data exposure and potential manipulation of AI-driven processes. Since StyleAI likely handles creative or design-related AI tasks, unauthorized access could lead to intellectual property theft, leakage of proprietary AI models or datasets, and unauthorized modification of AI outputs. This could damage the confidentiality and integrity of business-critical information and AI workflows. Additionally, organizations in regulated industries such as finance, healthcare, or telecommunications could face compliance issues under GDPR or other data protection laws if personal or sensitive data is accessed without authorization. The medium severity rating suggests a moderate risk, but the lack of required privileges or user interaction means attackers could exploit this vulnerability remotely and stealthily, increasing the threat surface. The absence of patches also means organizations must rely on compensating controls until fixes are available.

1. Implement strict network segmentation and firewall rules to limit access to StyleAI instances only to trusted internal users and systems. 2. Employ Web Application Firewalls (WAFs) with custom rules to detect and block anomalous requests attempting to access unauthorized functions. 3. Conduct thorough access control reviews and audits on StyleAI deployments to identify and restrict any exposed endpoints or functionalities. 4. Monitor logs and network traffic for unusual access patterns indicative of exploitation attempts. 5. Until an official patch is released, consider disabling or restricting access to non-essential features of StyleAI that might be vulnerable. 6. Engage with the vendor relentlo for timely updates and patches, and plan for rapid deployment once available. 7. Educate internal teams about the risks of missing authorization vulnerabilities and encourage prompt reporting of suspicious activities related to StyleAI. 8. If feasible, deploy additional application-layer authorization checks as a temporary safeguard to enforce proper access control.