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CVE-2026-56702

CVE-2026-56702 · Adminer before 5.4.3 Unrestricted File Upload via AdminerFileUpload

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.1 · High · EPSS 0.6% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • adminer

    Versions
    • ≥ 0, < 5.4.3: Affected (semver)
    • 5.4.3: Not affected (semver)

    Update to 5.4.3

  • adminer Debian:12

    Versions
    • 4.8.1-1
    • 4.8.1-2
    • 4.8.1-4
    • 5.1.0-1
    • 5.2.1+dfsg-1
    • 5.3.0+dfsg-1
    • 5.4.0+dfsg-1
    • 5.4.1+dfsg-1
    • 5.4.2+dfsg-1
    • 5.4.3+dfsg-1
    • 5.4.4+dfsg-1
    • 6.0.0-1
    • 6.0.1-1
    • 6.0.2-1
    • 6.1.0-1
    • 6.1.1-1
    • 6.1.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • adminer Debian:13

    Versions
    • 5.2.1+dfsg-1
    • 5.3.0+dfsg-1
    • 5.4.0+dfsg-1
    • 5.4.1+dfsg-1
    • 5.4.2+dfsg-1
    • 5.4.3+dfsg-1
    • 5.4.4+dfsg-1
    • 6.0.0-1
    • 6.0.1-1
    • 6.0.2-1
    • 6.1.0-1
    • 6.1.1-1
    • 6.1.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • adminer Debian:14

    Versions
    • 5.2.1+dfsg-1
    • 5.3.0+dfsg-1
    • 5.4.0+dfsg-1
    • 5.4.1+dfsg-1
    • 5.4.2+dfsg-1
    Affected ranges
    • ECOSYSTEM: < 5.4.3+dfsg-1

    Update to 5.4.3+dfsg-1

  • adminer Ubuntu:Pro:16.04:LTS

    Versions
    • 4.2.1-1
    • 4.2.1-1ubuntu1
    • 4.2.1-1ubuntu1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • adminer Ubuntu:Pro:18.04:LTS

    Versions
    • 4.3.1-2
    • 4.5.0-1
    • 4.6.1-1
    • 4.6.2-1
    • 4.6.2-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • adminer Ubuntu:Pro:20.04:LTS

    Versions
    • 4.7.2-1
    • 4.7.4-1
    • 4.7.5-1
    • 4.7.6-1
    • 4.7.6-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • adminer Ubuntu:22.04:LTS

    Versions
    • 4.7.9-2
    • 4.8.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • adminer Ubuntu:24.04:LTS

    Versions
    • 4.8.1-1
    • 4.8.1-1ubuntu1
    • 4.8.1-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • adminer Ubuntu:26.04:LTS

    Versions
    • 5.2.1+dfsg-1
    • 5.3.0+dfsg-1
    • 5.4.0+dfsg-1
    • 5.4.1+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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