Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a vulnerability in an API endpoint that discloses private topic metadata of admin users to moderator users even if the moderators do not have access to the private topics. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

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History

Fri, 20 Mar 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 20 Mar 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Discourse
Discourse discourse
Vendors & Products Discourse
Discourse discourse

Thu, 19 Mar 2026 21:45:00 +0000

Type Values Removed Values Added
Description Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a vulnerability in an API endpoint that discloses private topic metadata of admin users to moderator users even if the moderators do not have access to the private topics. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.
Title Discourse leaks private topic metadata to non-authorized users
Weaknesses CWE-201
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-20T16:28:35.052Z

Reserved: 2026-02-25T03:11:36.689Z

Link: CVE-2026-27935

cve-icon Vulnrichment

Updated: 2026-03-20T16:28:28.586Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-19T22:16:30.997

Modified: 2026-03-20T13:39:46.493

Link: CVE-2026-27935

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-20T11:05:56Z

Weaknesses