Critical severity9.8NVD Advisory· Published Aug 25, 2026

CVE-2026-56705

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.

Affected products

Vrana/adminerllm-fuzzy
Range: <5.4.3

Patches

Vulnerability mechanics

References

github.com/vrana/adminer/security/advisories/GHSA-r4x9-5m63-3vxwnvd
www.vulncheck.com/advisories/adminer-before-remote-code-execution-via-mssql-pdo-dsn-injectionnvd

News mentions

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cvss	0.637
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000