SQL Injection Vulnerability in Discourse Data Explorer Plugin
CVE-2026-28218

5.3MEDIUM

Key Information:

Vendor

Discourse
Status
Discourse
Vendor
CVE Published:
26 February 2026

What is CVE-2026-28218?

The Discourse Data Explorer plugin contains a vulnerability that permits authenticated users to execute SQL queries without proper group permissions. This fail-open access control flaw affects versions before 2025.12.2, 2026.1.1, and 2026.2.0, allowing unauthorized access to built-in system queries and sensitive data. Users are advised to set explicit group permissions for each query or disable the Data Explorer plugin to mitigate the risk.

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Deploy the Patch

Affected Version(s)

discourse < 2025.12.2 < 2025.12.2

discourse >= 2026.1.0-latest, < 2026.1.1 < 2026.1.0-latest, 2026.1.1

discourse >= 2026.2.0-latest, < 2026.2.0 < 2026.2.0-latest, 2026.2.0

References

https://github.com/discourse/discourse/security/advisorie...
x_refsource_CONFIRM

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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