CVE-2026-56702

Adminer before 5.4.3 Unrestricted File Upload via AdminerFileUpload

7.1 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

0.62%Up 0.3 points since Aug 25, 2026

What each source reports

CVE List Score used 7.1

Adminer before 5.4.3 Unrestricted File Upload via AdminerFileUpload

Record: CVE-2026-56702
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-434
Updated: 2026-11-02

EUVDEUVD-2026-65200 7.1

Record: EUVD-2026-65200
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-p84v-vg3f-p9m6 7.1

Adminer versions before 5.4.3 contain an unrestricted file upload vulnerability in the...

Record: GHSA-p84v-vg3f-p9m6
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-434
Updated: 2026-11-02

NVD 7.1

Record: CVE-2026-56702
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-434
Updated: 2026-11-02

OSV 7.1

Adminer before 5.4.3 Unrestricted File Upload via AdminerFileUpload

Record: CVE-2026-56702
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-434
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-56702 7.1

Record: DEBIAN-CVE-2026-56702
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-56702 7.1

Record: UBUNTU-CVE-2026-56702
CVSS 4.0: 7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

vrana adminer

Affected packages

Affected packages
Package	Affected	Fixed
`adminer` Debian:12	All versions, plus listed versions 4.8.1-14.8.1-24.8.1-45.1.0-15.2.1+dfsg-1 Show 12 moreShow less 5.3.0+dfsg-15.4.0+dfsg-15.4.1+dfsg-15.4.2+dfsg-15.4.3+dfsg-15.4.4+dfsg-16.0.0-16.0.1-16.0.2-16.1.0-16.1.1-16.1.2-1	None known
`adminer` Debian:13	All versions, plus listed versions 5.2.1+dfsg-15.3.0+dfsg-15.4.0+dfsg-15.4.1+dfsg-15.4.2+dfsg-1 Show 8 moreShow less 5.4.3+dfsg-15.4.4+dfsg-16.0.0-16.0.1-16.0.2-16.1.0-16.1.1-16.1.2-1	None known
`adminer` Debian:14	before 5.4.3+dfsg-1, plus listed versions 5.2.1+dfsg-15.3.0+dfsg-15.4.0+dfsg-15.4.1+dfsg-15.4.2+dfsg-1	5.4.3+dfsg-1
`adminer` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 4.2.1-14.2.1-1ubuntu14.2.1-1ubuntu1+esm1	None known
`adminer` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 4.3.1-24.5.0-14.6.1-14.6.2-14.6.2-1ubuntu0.1~esm1	None known
`adminer` Ubuntu:Pro:20.04:LTS	All versions, plus listed versions 4.7.2-14.7.4-14.7.5-14.7.6-14.7.6-1ubuntu0.1~esm1	None known
`adminer` Ubuntu:22.04:LTS	All versions, plus listed versions 4.7.9-24.8.1-1	None known
`adminer` Ubuntu:24.04:LTS	All versions, plus listed versions 4.8.1-14.8.1-1ubuntu14.8.1-2	None known
`adminer` Ubuntu:26.04:LTS	All versions, plus listed versions 5.2.1+dfsg-15.3.0+dfsg-15.4.0+dfsg-15.4.1+dfsg-1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-56702 is a high vulnerability (CVSS 7.1) in Vrana Adminer, published August 25, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.62%, the 49th percentile. Fixed in adminer 5.4.3+dfsg-1.