CVE-2026-56702
Adminer before 5.4.3 Unrestricted File Upload via AdminerFileUpload
- State
- Published
- Severity
- 7.1 High
- Published
- Aug 25, 2026
- Updated
- Aug 27, 2026
- Reserved
- Jun 22, 2026
Description
Adminer versions before 5.4.3 contain an unrestricted file upload vulnerability in the AdminerFileUpload plugin that allows authenticated users to upload PHP files by exploiting a permissive default extension allowlist. Attackers can upload PHP webshells to columns ending in _path and execute arbitrary code as the web-server user when uploadPath is web-served.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-434 Unrestricted Upload of File with Dangerous Type
Affected Products
| Product | Versions |
|---|---|
adminervrana |
|
References
- GitHub Security Advisory (GHSA-vcvj-rwwm-x6g5)vendor-advisory
- VulnCheck Advisory: Adminer before 5.4.3 Unrestricted File Upload via AdminerFileUploadthird-party-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.