Vulnerability · Published Aug 20, 2026 · Assigned by zdi

CVE-2026-18274Heimdall Data Database Proxy uploadJar Directory Traversal Remote Code Execution Vulnerability

High 7.2

In plain English

A high-severity path traversal in Database Proxy from Heimdall Data. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.0% (higher than 81% of all known vulnerabilities).

Severity (CVSS 3.0)7.2High

Exploit odds (30 days)2.0%top 18.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
Heimdall Data	Database Proxy	25.03.01.21

Weakness: CWE-22 · Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

ZDI-26-479 x_research-advisory