P4Verified

CVE-2026-56702: adminer 0 to before 5.4.3

CVE-2026-56702. CVSS 3.1 base score 8.8 (HIGH, Vendor/CNA). EPSS 0.00616 (percentile 0.48035), scored 11-Oct-2026.

Affected technology

adminer · 0 to before 5.4.3
vrana

Description’s affected range: versions before 5.4.3

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

Authenticated users can upload PHP files by exploiting a permissive default extension allowlist. Vendor/CNA’s CVSS 4.0 assessment (base score 7.1/10) rates confidentiality impact as high; integrity and availability impact as none.

Published 12-Oct-2026 16:54 UTC

CWE: CWE-434
CCR priority: 35.4 /100 (P4)
CVSS 3.1: 8.8 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · Vendor/CNA
EPSS: 0.00616 · percentile 0.48035 · 2026-10-11
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-12 16:54:24.294989+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-56702.html