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CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2026-28218

Discourse's Fail-Open Access Control in Data Explorer Plugin Allows Unauthorized SQL Query Execution

Description

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, fail-open access control in Data Explorer plugin allows any authenticated user to execute SQL queries that have no explicit group assignments, including built-in system queries. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. As a workaround, either explicitly set group permissions on each Data Explorer query that doesn't have permissions, or disable discourse-data-explorer plugin.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

discourse discourse

  • < 2025.12.2affected
  • >= 2026.1.0-latest, < 2026.1.1affected
  • >= 2026.2.0-latest, < 2026.2.0affected

References