Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a moderator could exploit insufficient authorization checks to access metadata of posts they should not have permission to view. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
discourse discourse affected
Version Status Constraints
>= 2026.1.0-latest, < 2026.1.2 affected
—
>= 2026.2.0-latest, < 2026.2.1 affected
—
= 2026.3.0-latest.1 affected
—

No data.

No data.

No data.

Subscriptions

No data.

Tracking

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/discourse/discourse/security/advisories/GHSA-5qm9-r98f-g4mq cve-icon cve-icon
History

Fri, 20 Mar 2026 03:15:00 +0000

Type Values Removed Values Added
Description Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a moderator could exploit insufficient authorization checks to access metadata of posts they should not have permission to view. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch.
Title Discourse has Unauthorized Post Data Exposure in discourse-user-notes
Weaknesses CWE-862
References
Metrics cvssV4_0

{'score': 5.3, '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-20T02:59:13.574Z

Reserved: 2026-03-06T00:04:56.700Z

Link: CVE-2026-30889

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-20T03:15:59.023

Modified: 2026-03-20T03:15:59.023

Link: CVE-2026-30889

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses