# CVE-2026-56705: adminer: Adminer before 5.4.3 fails to sanitize the server field before constructing a PDO DSN string, allowing unauthenticate...

CVE-2026-56705 is fixed in adminer on 1 platform by DEBIAN-CVE-2026-56705 (version 5.4.3+dfsg-1), released August 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-56705
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0090
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 25, 2026

## Description

Adminer before 5.4.3 fails to sanitize the server field before constructing a PDO DSN string, allowing unauthenticated attackers to inject ODBC parameters via semicolons. Attackers can inject TraceFile and TraceOn parameters to write PHP code to the web root, achieving remote code execution when the trace file is accessed.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | adminer Debian 14 | 5.4.3+dfsg-1 | [DEBIAN-CVE-2026-56705](https://patchblox.com/security/data/fix/linux/debian-cve-2026-56705.md) | Aug 27, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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