What is CVE-2026-56705?

CVE-2026-56705 is a critical-severity vulnerability in Vrana Adminer, classified under External Control of File Name or Path. CVSS score: 9.8/10. Published 2026-08-25.

How severe is CVE-2026-56705?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Vrana Adminer

CVE-2026-56705

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.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Vrana Adminer

Weakness classification (CWE)

CWE-73 — External Control of File Name or Path

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-56705?: CVE-2026-56705 is a critical-severity vulnerability in Vrana Adminer, classified under External Control of File Name or Path. CVSS score: 9.8/10. Published 2026-08-25.
How severe is CVE-2026-56705?: Critical severity. CVSS v3 base score is 9.8 out of 10.