Remote Code Execution Vulnerability in Adminer by Vendor
CVE-2026-109347

8.6HIGH

Key Information:

Vendor

Vrana

Status
Adminer
Vendor
CVE Published:
12 October 2026

What is CVE-2026-109347?

A remote code execution vulnerability exists in Adminer versions prior to 6.1.1. Authenticated SQLite users can exploit this flaw by leveraging a UTF-8 byte-order mark to bypass critical database restrictions such as ATTACH and VACUUM INTO. This allows attackers to attach a database file from a PHP-served path and create a table named with PHP code, which can be executed as the web server user, posing significant risks to web applications.

Affected Version(s)

adminer 0 < 6.1.1

adminer 6.1.1

References

https://github.com/vrana/adminer/security/advisories/GHSA...
vendor-advisory
https://www.vulncheck.com/advisories/adminer-before-6.1.1...
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

farisv
.