CVE-2026-18274 Heimdall Data Database Proxy uploadJar Directory Traversal Remote Code Execution Vulnerability
Remote attackers with authentication can execute arbitrary code as root via directory traversal in the uploadJar method of Heimdall Data Database Proxy.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18274?
CVE-2026-18274 is a high-severity path traversal vulnerability in Heimdall Data Database Proxy, published on 20 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
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. Was ZDI-CAN-28603.
Weakness: CWE-22
Which versions are affected by CVE-2026-18274?
How do I fix CVE-2026-18274?
No fix has been published for CVE-2026-18274 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-18274 being exploited?
There is no known exploitation of CVE-2026-18274 in the wild and no public exploit code.
Sources
Also known as GHSA-7gx5-3cjh-4p7m.