CVE-2026-12357

Received Received - Intake

Heimdall Data Database Proxy CRLF Injection Remote Code Execution

Publication date: 2026-07-29

Last updated on: 2026-07-29

Assigner: Zero Day Initiative

Description

Heimdall Data Database Proxy generateFileContent CRLF Injection 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 generateFileContent function. The issue results from the lack of proper neutralization of CRLF sequences. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-29251.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-29

Last Modified

2026-07-29

Generated

2026-08-19

AI Q&A

2026-07-30

EPSS Evaluated

2026-08-18

NVD

CVE-2026-12357

Affected Vendors & Products

Vendor	Product	Version / Range
heimdall_data	database_proxy	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-93	The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.

Attack-Flow Graph

Executive Summary

This is a CRLF injection and remote code execution vulnerability in Heimdall Data Database Proxy. The generateFileContent function fails to properly neutralize CRLF sequences, allowing attackers with authentication to inject malicious code. Successful exploitation grants root-level code execution on affected systems.

Detection Guidance

This vulnerability involves CRLF injection in Heimdall Data Database Proxy's generateFileContent function. Detection requires checking for improper input handling in proxy logs or network traffic analysis for CRLF sequences. No specific commands are provided in the context.

Impact Analysis

If you use Heimdall Data Database Proxy, attackers could gain full control of your system, steal data, install malware, or disrupt operations. The vulnerability requires authentication but allows complete system compromise once exploited.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR and HIPAA requirements for data protection and access controls. Organizations may face fines and compliance penalties if exploited.

Mitigation Strategies

Apply patches or updates from Heimdall Data to address the CRLF injection flaw in the generateFileContent function. If patches are unavailable, restrict network access to the proxy and monitor for suspicious activity. Consider disabling the proxy until mitigation is applied.

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