What is CVE-2026-56703?

CVE-2026-56703 is a high-severity vulnerability in Vrana Adminer, classified under Code Injection. CVSS score: 7.2/10. Published 2026-08-25.

How severe is CVE-2026-56703?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Vrana Adminer

CVE-2026-56703

Adminer before 5.4.3 contains a remote code execution vulnerability in SQLite query handling where VACUUM INTO is not blocked despite ATTACH restrictions. Authenticated attackers can execute VACUUM INTO to write PHP code to arbitrary file paths and execute commands on the server.

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Vrana Adminer

Weakness classification (CWE)

CWE-94 — Code Injection

References

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

Frequently asked questions

What is CVE-2026-56703?: CVE-2026-56703 is a high-severity vulnerability in Vrana Adminer, classified under Code Injection. CVSS score: 7.2/10. Published 2026-08-25.
How severe is CVE-2026-56703?: High severity. CVSS v3 base score is 7.2 out of 10.