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CVE-2026-56704

CVE-2026-56704 · Adminer before 5.4.3 Cross-Site Scripting via MySQL Version String

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

Adminer before 5.4.3 inserts unsanitized database server version strings into script tags with valid CSP nonces without proper validation. Attackers controlling a rogue MySQL server can return crafted version strings that break out of the JavaScript context and execute arbitrary code, bypassing Content Security Policy protections.

CVSS 5.3 · Medium · EPSS 0.3% · 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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