CVE-2026-109347 Adminer before 6.1.1 RCE via UTF-8 BOM SQLite ATTACH Bypass
Authenticated SQLite users can execute arbitrary PHP code by bypassing ATTACH restrictions using a UTF-8 BOM prefix in Adminer.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109347?
CVE-2026-109347 is a high-severity code injection vulnerability in vrana adminer, published on 12 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official 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.
Weakness: CWE-94
Which versions are affected by CVE-2026-109347?
How do I fix CVE-2026-109347?
No fix has been published for CVE-2026-109347 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-109347 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109347 exists.
Sources
Also known as DEBIAN-CVE-2026-109347, GHSA-q48c-r4q8-5c57, GHSA-r9r5-j5q8-8c59, UBUNTU-CVE-2026-109347.