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CVE-2026-56705

Adminer before 5.4.3 Remote Code Execution via MSSQL PDO DSN Injection

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.4.3
2 proofs of concept on GitHub
  • Exploitation: poc
  • Automatable: yes
  • Technical impact: total

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: yes · Technical impact: total

  3. Record last updated

Affected versions

  • vrana adminer

    fixed in 5.4.3

References 4

GitHub · vrana/adminer

vulncheck.com

GitHub · Boreas37/CVE-2026-56705

GitHub · ChiefYoru/Exploit-CVE-2026-56705