CVE-2025-51308 is a security vulnerability identified in Gatling Enterprise versions prior to 1.25.0. Gatling Enterprise is a performance testing tool widely used for load testing web applications and APIs. The vulnerability arises from missing authorization checks on certain REST API endpoints that are intended to be read-only. Specifically, a low-privileged user who does not have the 'admin' role can perform REST API calls on these read-only endpoints and retrieve information that should otherwise be restricted. This flaw allows unauthorized information disclosure because the system fails to verify the user's role before granting access to sensitive data exposed via the API. Although the endpoints are read-only and do not permit modification of data, the unauthorized access to internal information could aid an attacker in reconnaissance or further attacks. The vulnerability does not require administrative privileges or elevated roles, only a low-privileged user account, and does not require user interaction beyond making the API call. There are no known exploits in the wild at the time of publication, and no CVSS score has been assigned yet. The lack of patch links suggests that remediation may be pending or that users should upgrade to version 1.25.0 or later where the issue is resolved.

For European organizations using Gatling Enterprise for performance testing, this vulnerability could lead to unauthorized disclosure of sensitive internal information. While the vulnerability does not allow modification or deletion of data, the exposure of potentially sensitive configuration, test data, or system information could facilitate further targeted attacks or data breaches. Organizations in regulated sectors such as finance, healthcare, or critical infrastructure may face compliance risks if sensitive information is leaked. Additionally, attackers could leverage the disclosed information to map internal systems or identify additional vulnerabilities. The impact is primarily on confidentiality, with limited direct impact on integrity or availability. However, the ease of access by low-privileged users increases the risk profile, especially in environments where user accounts are shared or not tightly controlled. Given the nature of Gatling Enterprise as a testing tool, the affected information could include details about internal applications and infrastructure, which are valuable for adversaries.

Organizations should immediately verify their Gatling Enterprise version and upgrade to version 1.25.0 or later where this vulnerability is fixed. Until upgrading, restrict access to Gatling Enterprise to trusted users only and enforce strict role-based access controls to minimize the number of low-privileged users with access to the system. Implement network segmentation to limit access to the Gatling Enterprise API endpoints from untrusted networks. Monitor API access logs for unusual or unauthorized requests to read-only endpoints. Additionally, conduct an internal audit of information accessible via these endpoints to assess what data may have been exposed. If possible, apply compensating controls such as API gateways or web application firewalls to enforce authorization checks externally. Finally, educate users about the importance of safeguarding their credentials and promptly revoke access for users who no longer require it.