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CVE-2026-89023 – Missing Authorization / Sensitive Data Exposure – Domain For Sale WordPress Plugin

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Summary

CVE-2026-89023 is a missing authorization vulnerability (CWE-862) in the ThemeAtelier "Domain For Sale" WordPress plugin, affecting all versions prior to 3.5.2. The flaw resides in the plugin’s REST API endpoints, which fail to enforce proper access control, allowing unauthenticated attackers to read and delete sensitive offer data over the network. The vulnerability is rated HIGH severity.

Technical details

  • Root cause: REST API endpoints registered by the plugin do not verify that the requesting user is authenticated or authorized before processing the request (missing authorization / CWE-862).
  • Trigger conditions: An attacker sends unauthenticated HTTP requests directly to the plugin’s exposed REST API routes on a site running the vulnerable plugin.
  • Attack vector: Network — no authentication, no user interaction, and low attack complexity are required.
  • Impact: Unauthenticated attackers can retrieve stored domain offer records, delete arbitrary offers by identifier, and access dashboard statistics that expose bidder contact information, offer details, private messages, verification tokens, and other business data.

Affected software

  • ThemeAtelier "Domain For Sale" WordPress plugin — all versions prior to 3.5.2.

Severity

  • CVSS v3.1 Base Score: 8.6 (HIGH) — Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
  • CVSS v4.0 Base Score: 8.8 (HIGH) — Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N

Mitigation and recommended actions

  • Immediate: Upgrade the "Domain For Sale" plugin to version 3.5.2 or later, which restores proper authorization checks on the affected REST API endpoints.
  • If no patch: If upgrading is not immediately possible, disable or remove the "Domain For Sale" plugin, and restrict external access to WordPress REST API routes associated with the plugin at the network or web server layer until the update can be applied.

References

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