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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.009 (58.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.009 · change: +0.004
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/vrana/adminer/security/advisories/GHSA-r4x9-5m63-3vxw (vendor-advisory)
- www.vulncheck.com/advisories/adminer-before-remote-code-execution-via-mssql-pdo… (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.
- Is CVE-2026-56705 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.