CVE-2026-28218CWE-284

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

Medium · published February 26, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
17.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00262 · 17.0th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-02-26T21:23Z
EPSS history
Timeline
  • 26 FEB 21:23Z
    Discourse's Fail-Open Access Control in Data Explorer Plugin Allows Unauthorized SQL Query Execution
    cvelistv5