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CVE-2020-11026

CVE-2020-11026 · Specially crafted filenames in WordPress leading to XSS

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

In affected versions of WordPress, files with a specially crafted name when uploaded to the Media section can lead to script execution upon accessing the file. This requires an authenticated user with privileges to upload files. This has been patched in version 5.4.1, along with all the previously affected versions via a minor release (5.3.3, 5.2.6, 5.1.5, 5.0.9, 4.9.14, 4.8.13, 4.7.17, 4.6.18, 4.5.21, 4.4.22, 4.3.23, 4.2.27, 4.1.30, 4.0.30, 3.9.31, 3.8.33, 3.7.33).

CVSS 8.7 · High · EPSS 2.1% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • wordpress

    Versions
    • >= 5.4.0, < 5.4.1: Affected
    • >= 5.3.0, < 5.3.3: Affected
    • >= 5.2.0, < 5.2.6: Affected
    • >= 5.1.0, < 5.1.5: Affected
    • >= 5.0.0, < 5.0.9: Affected
    • >= 4.9.0, < 4.9.14: Affected
    • >= 4.8.0, < 4.8.13: Affected
    • >= 4.7.0, < 4.7.17: Affected
    • >= 4.6.0, < 4.6.18: Affected
    • >= 4.5.0, < 4.5.21: Affected
    • >= 4.4.0, < 4.4.22: Affected
    • >= 4.3.0, < 4.3.23: Affected
    • >= 4.2.0, < 4.2.27: Affected
    • >= 4.1.0, < 4.1.30: Affected
    • >= 4.0.0, < 4.0.30: Affected
    • >= 3.9.0, < 3.9.31: Affected
    • >= 3.8.0, < 3.8.33: Affected
    • >= 3.7.0, < 3.7.33: Affected

    No fix published

  • wordpress Debian:12

    Affected ranges
    • ECOSYSTEM: < 5.4.1+dfsg1-1

    Update to 5.4.1+dfsg1-1

  • wordpress Debian:13

    Affected ranges
    • ECOSYSTEM: < 5.4.1+dfsg1-1

    Update to 5.4.1+dfsg1-1

  • wordpress Debian:14

    Affected ranges
    • ECOSYSTEM: < 5.4.1+dfsg1-1

    Update to 5.4.1+dfsg1-1

  • wordpress Ubuntu:16.04:LTS

    Versions
    • 4.3+dfsg-1
    • 4.3.1+dfsg-1
    • 4.4+dfsg-1
    • 4.4.1+dfsg-1
    • 4.4.2+dfsg-1
    • 4.4.2+dfsg-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Ubuntu:18.04:LTS

    Versions
    • 4.8.2+dfsg-2
    • 4.8.3+dfsg-1
    • 4.9.1+dfsg-1
    • 4.9.2+dfsg-1
    • 4.9.4+dfsg-1
    • 4.9.5+dfsg1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Ubuntu:20.04:LTS

    Versions
    • 5.2.2+dfsg1-1
    • 5.2.4+dfsg1-1
    • 5.3.2+dfsg1-1
    • 5.3.2+dfsg1-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Ubuntu:22.04:LTS

    Versions
    • 5.7.1+dfsg1-2ubuntu1
    • 5.8.1+dfsg1-2ubuntu1
    • 5.8.2+dfsg1-1ubuntu1
    • 5.8.3+dfsg1-1ubuntu1
    • 5.8.3+dfsg1-1ubuntu1.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Ubuntu:24.04:LTS

    Versions
    • 6.2+dfsg1-1ubuntu1
    • 6.4.3+dfsg1-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Ubuntu:25.10

    Versions
    • 6.7.2+dfsg1-1.1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Ubuntu:26.10

    Versions
    • 6.7.2+dfsg1-1.1ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Ubuntu:26.04:LTS

    Versions
    • 6.7.2+dfsg1-1.1ubuntu1
    • 6.7.2+dfsg1-1.1ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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