ZDI-26-479: Heimdall Data Database Proxy uploadJar Directory Traversal Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Heimdall Data Database Proxy. Authentication is required to exploit this vulnerability. The specific flaw exists within the uploadJar method. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of root.
Other sources
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Heimdall Data Database Proxy. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.2. The following CVEs are assigned: CVE-2026-18274.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this issue?
The attacker must authenticate to the affected Heimdall Data Database Proxy installation. No user interaction is required.
What could successful exploitation allow?
A successful attacker can execute arbitrary code in the context of root, affecting confidentiality, integrity, and availability.
What input is involved in exploitation?
Exploitation involves a user-supplied path passed to the uploadJar method. The path is not properly validated before file operations are performed, enabling directory traversal.