What is CVE-2026-18274?

CVE-2026-18274 is a high-severity vulnerability in Heimdall Data Database Proxy, classified under Path Traversal. CVSS score: 7.2/10. Published 2026-08-20.

How severe is CVE-2026-18274?

High severity. CVSS v3 base score is 7.2 out of 10.

Path Traversal in Heimdall Data Database Proxy

CVE-2026-18274

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.

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Heimdall Data Database Proxy — versions 25.03.01.21

Weakness classification (CWE)

CWE-22 — Path Traversal

References

zdi-disclosures@trendmicro.com (x_research-advisory)

Frequently asked questions

What is CVE-2026-18274?: CVE-2026-18274 is a high-severity vulnerability in Heimdall Data Database Proxy, classified under Path Traversal. CVSS score: 7.2/10. Published 2026-08-20.
How severe is CVE-2026-18274?: High severity. CVSS v3 base score is 7.2 out of 10.