# 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.

- **Severity:** High 8.6 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Oct 2026
- **Updated:** 15 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-109347, GHSA-q48c-r4q8-5c57, GHSA-r9r5-j5q8-8c59, UBUNTU-CVE-2026-109347

## 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 (Improper Control of Generation of Code)

## 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.

## Is CVE-2026-109347 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109347 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-109347 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109347 exists.

Affected product: vrana adminer. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-109347/ (Markdown: https://insights.sbomify.com/CVE-2026-109347/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-109347
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-109347
- OSV: https://osv.dev/vulnerability/CVE-2026-109347

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-109347/
Summaries are generated and may contain mistakes; the official description above is the record.