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TI-2026-40882 Aliases CVE-2026-56703GHSA-j4fh-9p52-f987

Adminer before 5.4.3 Remote Code Execution via SQLite VACUUM INTO

Priority HIGH 72CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-94.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01171 67th percentileScored 2026-11-08
Fix Fixed adminer (vrana): 5.4.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Admineradminerbefore 5.4.35.4.3Patch availableCNA
  • adminer VendorAdminer Affected before 5.4.3 Fixed in 5.4.3 Patch available CNA

Remediation

  • Fix · CNA adminer (vrana) Fixed in 5.4.3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    vrana adminer 5.4.3

    6 records Highest priority Priority HIGH 4 HIGH, 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-40884 Adminer before 5.4.3 Remote Code Execution via MSSQL PDO DSN InjectionPriority HIGH 81
    • TI-2026-40881 Adminer before 5.4.3 Unrestricted File Upload via AdminerFileUploadPriority HIGH 66
    • TI-2026-27190 Adminer before 5.4.3 Arbitrary File Deletion via SQLite DropPriority HIGH 65
    Show all 6 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-56703
  2. 2026-10-03 Alias added: GHSA-j4fh-9p52-f987

References

Advisory 1

  • TI-2021-04411 SSRF in adminer KEVCVSS 3.1HIGH 7.2
  • TI-2026-40884 Adminer before 5.4.3 Remote Code Execution via MSSQL PDO DSN Injection CVSS 4.0CRITICAL 9.3
  • TI-2026-71163 Remote code execution in Adminer via UTF-8 BOM SQLite bypass CVSS 4.0HIGH 8.6
  • TI-2026-64854 Adminer before 6.0.2 Privileged-Port SSRF via host_port Regex CVSS 4.0MEDIUM 6.9
  • TI-2026-64852 Adminer before 6.0.2 Unauthenticated SSRF via Elasticsearch Driver CVSS 4.0MEDIUM 6.9
  • TI-2026-40881 Adminer before 5.4.3 Unrestricted File Upload via AdminerFileUpload CVSS 4.0HIGH 7.1
See all 26 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences