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 4.0

9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.9% chance of exploitation in the next 30 days; higher than 59% of CVEs (scores of 2026-10-25)

CWE

CWE-73

Published

2026-08-25

Modified

2026-10-12

Record from

the NVD, synced 2026-10-19

References

• https://github.com/vrana/adminer/security/advisories/GHSA-r4x9-5m63-3vxw
• https://www.vulncheck.com/advisories/adminer-before-remote-code-execution-via-mssql-pdo-dsn-injection
• https://github.com/vrana/adminer/security/advisories/GHSA-r4x9-5m63-3vxw

Check your stackJSON