CVE-2026-75076 in Aspera Enterprise WebApps
Summary
by MITRE • 10/13/2026
IBM Aspera Enterprise WebApps 1.0.0 through 1.0.6 could allow a remote attacker to obtain sensitive information due to the exposure of JavaScript source map files.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 10/13/2026
The vulnerability identified in IBM Aspera Enterprise WebApps versions 1.0.0 through 1.0.6 stems from an improper configuration that results in the public exposure of JavaScript source map files, commonly known as .map files. These files are typically generated during the build and minification process of web applications to assist developers in debugging code by mapping compressed or obfuscated script back to its original readable form. While these artifacts are essential for development environments, they contain detailed mappings that reveal the structure, logic, variable names, and potentially sensitive data handling mechanisms of the underlying application source code when deployed in production settings without proper access controls.
From a technical perspective, this flaw represents an Information Exposure vulnerability where the web server is configured to serve static files associated with debugging tools directly to end-users over HTTP or HTTPS. When a remote attacker accesses these exposed map files, they can utilize de-minification techniques to reconstruct the original JavaScript source code. This process allows for a thorough analysis of the application's internal logic, including API endpoints, authentication flows, data validation routines, and error handling mechanisms. The exposure is not due to a flaw in the cryptographic algorithms or network protocols but rather a misconfiguration in how static assets are served by the web server hosting the Aspera Enterprise WebApps interface.
The operational impact of this vulnerability extends beyond simple code disclosure. By analyzing the reconstructed source code, an attacker can identify specific logic flaws, such as insecure direct object references, improper access control checks, or hardcoded credentials and API keys that may have been inadvertently included in the client-side scripts. This intelligence gathering phase significantly lowers the barrier for subsequent attacks, enabling targeted exploitation of other vulnerabilities within the application stack. The attacker gains a comprehensive understanding of the attack surface, allowing them to craft precise payloads against identified weaknesses rather than relying on generic scanning techniques.
This vulnerability aligns with CWE-200, which defines Information Exposure as an intentional or unintentional disclosure of information to actors who are not explicitly authorized to have access to that information. Furthermore, in the context of the MITRE ATT&CK framework, this activity corresponds to T1589, specifically the sub-technique Gather Victim Identity Information and T1602, which involves Screen Capture or Data from Configuration Files depending on what specific data is found within the source code. The exposure facilitates reconnaissance activities that are critical for advanced persistent threats seeking to establish a foothold in enterprise environments.
Mitigation strategies should focus primarily on server configuration adjustments rather than application code changes. Administrators must ensure that web servers, such as Apache or Nginx, are configured to deny access to files with the .map extension or any other debugging artifacts before deployment to production environments. This can be achieved by adding specific location blocks in the server configuration to return a 403 Forbidden status for requests targeting these file types. Additionally, organizations should implement strict Content Security Policies and ensure that build pipelines automatically strip out source maps during the final packaging stage if they are not required for remote debugging scenarios. Regular security audits of static asset serving configurations are recommended to prevent similar exposures in future updates or deployments.