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Report · Zero Day InitiativeAbout CVE-2026-18274Published

ZDI-26-479: Heimdall Data Database Proxy uploadJar Directory Traversal Remote Code Execution Vulnerability

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Authoritative record:CVE-2026-18274· High 7.2

Not known to be exploited · CVSS 7.2 High · patch available : patch Database Proxy soon.

Data as of 5 Nov 2026, 23:24 UTC

CVSS 3.0 base score
7.2High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
2.0% chance of exploitation in 30 days – higher than 81% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Heimdall DataDatabase ProxyAffected
  • =25.03.01.21
Fixed in–

AI-suggested

A vendor-provided official fix is available in Heimdall Data Database Proxy version 25.03.01.24. Users should upgrade to this version or later to remediate the vulnerability. Since authentication is required for exploitation, ensure that access controls are properly enforced as an additional precaution until the patch is applied.

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.

References

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