High severity · published Aug 25, 2026
CVE-2026-56703
Adminer before 5.4.3 Remote Code Execution via SQLite VACUUM INTO
7.2
CVSS
1.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AD
adminer · vrana
before 5.4.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56703
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56703
github.com
https://github.com/vrana/adminer/security/advisories/GHSA-gmx3-g29w-77wf
www.vulncheck.com
https://www.vulncheck.com/advisories/adminer-before-remote-code-execution-via-sqlite-vacuum-into
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