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CVE-2026-66666

CVE-2026-66666 · WordPress Core <= 7.1.2 - Unauthenticated Sensitive Data Exposure of Comments on Private and Unpublished Posts via Comment Feed vulnerability

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

Insertion of Sensitive Information Into Sent Data vulnerability in Automattic WordPress allows Retrieve Embedded Sensitive Data. This issue affects WordPress: from 7.1 through 7.1.2, from 7.0 through 7.0.6, from 6.9 through 6.9.9, from 6.8 through 6.8.10, from 6.7 through 6.7.9, and from 6.6 through 6.6.9.

CVSS 6.9 · Medium · EPSS 0.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • wordpress

    Versions
    • ≥ 7.1, ≤ 7.1.2: Affected; ≥ 7.1.3: Not affected (custom)
    • ≥ 7.0, ≤ 7.0.6: Affected; ≥ 7.0.7: Not affected (custom)
    • ≥ 6.9, ≤ 6.9.9: Affected; ≥ 6.9.10: Not affected (custom)
    • ≥ 6.8, ≤ 6.8.10: Affected; ≥ 6.8.11: Not affected (custom)
    • ≥ 6.7, ≤ 6.7.9: Affected; ≥ 6.7.10: Not affected (custom)
    • ≥ 6.6, ≤ 6.6.9: Affected; ≥ 6.6.10: Not affected (custom)

    Update to 6.6.10; Update to 6.7.10; Update to 6.8.11; Update to 6.9.10; Update to 7.0.7; Update to 7.1.3

  • wordpress Debian:12

    Versions
    • 6.1.1+dfsg1-1
    • 6.1.6+dfsg1-0+deb12u1
    • 6.1.9+dfsg1-0+deb12u1
    • 6.2+dfsg1-1
    • 6.2.1+dfsg1-1
    • 6.2.2+dfsg1-1
    • 6.3+dfsg1-1
    • 6.3.1+dfsg1-1
    • 6.3.2+dfsg1-1
    • 6.4.1+dfsg1-1
    • 6.4.1+dfsg1-1.1
    • 6.4.2+dfsg1-1
    • 6.4.3+dfsg1-1
    • 6.5+dfsg1-1
    • 6.5.2+dfsg1-1
    • 6.5.3+dfsg1-1
    • 6.5.5+dfsg1-1
    • 6.6.1+dfsg1-1
    • 6.7.2+dfsg1-1
    • 6.7.2+dfsg1-1.1
    • 6.8.1+dfsg1-1
    • 6.8.3+dfsg1-1
    • 6.9+dfsg1-1
    • 6.9.4+dfsg1-1
    • 7.0+dfsg1-1
    • 7.0.2+dfsg1-1
    • 7.0.3+dfsg1-1
    • 7.1+dfsg1-1
    • 7.1.1+dfsg1-1
    • 7.1.2+dfsg1-1
    • 7.1.3+dfsg1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Debian:13

    Versions
    • 6.8.1+dfsg1-1
    • 6.8.10+dfsg1-0+deb13u1
    • 6.8.3+dfsg1-0+deb13u1
    • 6.8.3+dfsg1-1
    • 6.8.6+dfsg1-0+deb13u1
    • 6.8.7+dfsg1-0+deb13u1
    • 6.9+dfsg1-1
    • 6.9.4+dfsg1-1
    • 7.0+dfsg1-1
    • 7.0.2+dfsg1-1
    • 7.0.3+dfsg1-1
    • 7.1+dfsg1-1
    • 7.1.1+dfsg1-1
    • 7.1.2+dfsg1-1
    • 7.1.3+dfsg1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wordpress Debian:14

    Versions
    • 6.8.1+dfsg1-1
    • 6.8.3+dfsg1-1
    • 6.9+dfsg1-1
    • 6.9.4+dfsg1-1
    • 7.0+dfsg1-1
    • 7.0.2+dfsg1-1
    • 7.0.3+dfsg1-1
    • 7.1+dfsg1-1
    • 7.1.1+dfsg1-1
    • 7.1.2+dfsg1-1
    Affected ranges
    • ECOSYSTEM: < 7.1.3+dfsg1-1

    Update to 7.1.3+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: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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