CVE-2026-109347
Received Received - Intake

Adminer Remote Code Execution via UTF-8 BOM in SQLite

Publication date: 2026-10-12

Last updated on: 2026-10-12

Assigner: VulnCheck

Description
Adminer before 6.1.1 contains a remote code execution vulnerability that allows authenticated SQLite users to bypass ATTACH and VACUUM INTO restrictions by prefixing statements with a UTF-8 byte-order mark. Attackers can attach a database file at a PHP-served path and create a table named with PHP code to execute it as the web server user.

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Meta Information

Published
2026-10-12
Last Modified
2026-10-12
Generated
2026-10-12
AI Q&A
2026-10-12
EPSS Evaluated
N/A
NVD
CVE-2026-109347
EUVD
EUVD-2026-97649

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
vrana adminer 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

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Executive Summary

Adminer before version 6.1.1 has a remote code execution flaw. Authenticated SQLite users can bypass security restrictions by using a UTF-8 byte-order mark to manipulate SQL statements. This allows attaching a database file to a PHP-served path and creating a table with PHP code that executes as the web server user.

Detection Guidance

Check Adminer version for versions before 6.1.1. Inspect server logs for unusual database attachments or PHP code execution attempts. Look for UTF-8 byte-order marks in SQL queries.

Impact Analysis

An attacker could gain control of the web server by executing arbitrary PHP code. This may lead to full system compromise, data theft, or unauthorized access to sensitive information stored on the server.

Compliance Impact

This vulnerability could result in unauthorized data access or exfiltration, violating GDPR (data protection) and HIPAA (health information privacy) requirements. Non-compliance may lead to legal penalties, fines, or reputational damage.

Mitigation Strategies

Upgrade Adminer to version 6.1.1 or later immediately. Restrict database user permissions to prevent unauthorized attachments. Monitor for suspicious activity in server logs.

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