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CVE-2023-5561

MEDIUM 5.3 CVSS 3.1
Published
October 16, 2023
Last modified
June 17, 2026
NVD status
Modified
Reported by
contact@wpscan.com
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Description

WordPress does not properly restrict which user fields are searchable via the REST API, allowing unauthenticated attackers to discern the email addresses of users who have published public posts on an affected website via an Oracle style attack

Affected WordPress components

  • WordPress core
    Confirmed match
    From 5.6 (including) to 5.6.12 (excluding); From 5.7 (including) to 5.7.10 (excluding); From 4.7 (including) to 4.7.27 (excluding); From 4.8 (including) to 4.8.23 (excluding); From 4.9 (including) to 4.9.24 (excluding); From 5.0 (including) to 5.0.20 (excluding); From 5.1 (including) to 5.1.17 (excluding); From 5.2 (including) to 5.2.19 (excluding); From 5.3 (including) to 5.3.16 (excluding); From 5.4 (including) to 5.4.14 (excluding); From 5.5 (including) to 5.5.13 (excluding); From 5.8 (including) to 5.8.8 (excluding); From 5.9 (including) to 5.9.8 (excluding); From 6.0 (including) to 6.0.6 (excluding); From 6.1 (including) to 6.1.4 (excluding); From 6.2 (including) to 6.2.3 (excluding); From 6.3 (including) to 6.3.2 (excluding)
  • wordpress Plugin · wordpress
    Possible match Homeless
    From 6.3.0 (including) to 6.3.2 (excluding); From 6.2.0 (including) to 6.2.3 (excluding); From 6.1.0 (including) to 6.1.4 (excluding); From 6.0.0 (including) to 6.0.6 (excluding); From 5.9.0 (including) to 5.9.8 (excluding); From 5.8.0 (including) to 5.8.8 (excluding); From 5.7.0 (including) to 5.7.10 (excluding); From 5.6.0 (including) to 5.6.12 (excluding); From 5.5.0 (including) to 5.5.13 (excluding); From 5.4.0 (including) to 5.4.14 (excluding); From 5.3.0 (including) to 5.3.16 (excluding); From 5.2.0 (including) to 5.2.19 (excluding); From 5.0.0 (including) to 5.0.20 (excluding); From 4.9.0 (including) to 4.9.24 (excluding); From 4.8.0 (including) to 4.8.23 (excluding); From 4.7.0 (including) to 4.7.27 (excluding)
    View on WordPress.org
  • wordpress Theme · wordpress
    Possible match Homeless
    From 6.3.0 (including) to 6.3.2 (excluding); From 6.2.0 (including) to 6.2.3 (excluding); From 6.1.0 (including) to 6.1.4 (excluding); From 6.0.0 (including) to 6.0.6 (excluding); From 5.9.0 (including) to 5.9.8 (excluding); From 5.8.0 (including) to 5.8.8 (excluding); From 5.7.0 (including) to 5.7.10 (excluding); From 5.6.0 (including) to 5.6.12 (excluding); From 5.5.0 (including) to 5.5.13 (excluding); From 5.4.0 (including) to 5.4.14 (excluding); From 5.3.0 (including) to 5.3.16 (excluding); From 5.2.0 (including) to 5.2.19 (excluding); From 5.0.0 (including) to 5.0.20 (excluding); From 4.9.0 (including) to 4.9.24 (excluding); From 4.8.0 (including) to 4.8.23 (excluding); From 4.7.0 (including) to 4.7.27 (excluding)
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • WordPress WordPress — From 6.3.0 (including) to 6.3.2 (excluding)
  • WordPress WordPress — From 6.2.0 (including) to 6.2.3 (excluding)
  • WordPress WordPress — From 6.1.0 (including) to 6.1.4 (excluding)
  • WordPress WordPress — From 6.0.0 (including) to 6.0.6 (excluding)
  • WordPress WordPress — From 5.9.0 (including) to 5.9.8 (excluding)
  • WordPress WordPress — From 5.8.0 (including) to 5.8.8 (excluding)
  • WordPress WordPress — From 5.7.0 (including) to 5.7.10 (excluding)
  • WordPress WordPress — From 5.6.0 (including) to 5.6.12 (excluding)
  • WordPress WordPress — From 5.5.0 (including) to 5.5.13 (excluding)
  • WordPress WordPress — From 5.4.0 (including) to 5.4.14 (excluding)
  • WordPress WordPress — From 5.3.0 (including) to 5.3.16 (excluding)
  • WordPress WordPress — From 5.2.0 (including) to 5.2.19 (excluding)
  • WordPress WordPress — From 5.0.0 (including) to 5.0.20 (excluding)
  • WordPress WordPress — From 4.9.0 (including) to 4.9.24 (excluding)
  • WordPress WordPress — From 4.8.0 (including) to 4.8.23 (excluding)
  • WordPress WordPress — From 4.7.0 (including) to 4.7.27 (excluding)
  • wordpress wordpress — From 4.7 (including) to 4.7.27 (excluding)
  • wordpress wordpress — From 4.8 (including) to 4.8.23 (excluding)
  • wordpress wordpress — From 4.9 (including) to 4.9.24 (excluding)
  • wordpress wordpress — From 5.0 (including) to 5.0.20 (excluding)
  • wordpress wordpress — From 5.1 (including) to 5.1.17 (excluding)
  • wordpress wordpress — From 5.2 (including) to 5.2.19 (excluding)
  • wordpress wordpress — From 5.3 (including) to 5.3.16 (excluding)
  • wordpress wordpress — From 5.4 (including) to 5.4.14 (excluding)
  • wordpress wordpress — From 5.5 (including) to 5.5.13 (excluding)
  • wordpress wordpress — From 5.6 (including) to 5.6.12 (excluding)
  • wordpress wordpress — From 5.7 (including) to 5.7.10 (excluding)
  • wordpress wordpress — From 5.8 (including) to 5.8.8 (excluding)
  • wordpress wordpress — From 5.9 (including) to 5.9.8 (excluding)
  • wordpress wordpress — From 6.0 (including) to 6.0.6 (excluding)
  • wordpress wordpress — From 6.1 (including) to 6.1.4 (excluding)
  • wordpress wordpress — From 6.2 (including) to 6.2.3 (excluding)
  • wordpress wordpress — From 6.3 (including) to 6.3.2 (excluding)

References

  • lists.debian.org https://lists.debian.org/debian-lts-announce/2023/11/msg00014.html
  • wpscan.com https://wpscan.com/blog/email-leak-oracle-vulnerability-addressed-in-wordpress-6-3-2/ Exploit, Third Party Advisory
  • wpscan.com https://wpscan.com/vulnerability/19380917-4c27-4095-abf1-eba6f913b441 Third Party Advisory
  • nvd.nist.gov Official NVD record