BIT-discourse-2026-28282

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/discourse/BIT-discourse-2026-28282.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-discourse-2026-28282
Aliases
Published
2026-03-27T07:10:17Z
Modified
2026-09-10T16:01:31Z
Summary
Discourse vulnerable to group membership addition permission bypass via discourse-policy plugin
Details

Discourse is an open-source discussion platform. Versions prior to 2026.3.0, 2026.2.1, and 2026.1.2 have a security flaw in the discourse-policy plugin which allowed a user with policy creation permission to gain membership access to any private/restricted groups. Once membership to a private/restricted group has been obtained, the user will be able to read private topics that only the group has access to. Versions 2026.3.0, 2026.2.1, and 2026.1.2 contain a patch. As a workaround, review all policies for the use of add-users-to-group and temporarily remove the attribute from the policy. Alternatively, disable the discourse-policy plugin by disabling the policy_enabled site setting.

Database specific 
{
    "cpes": [
        "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:discourse:discourse:*:*:*:*:latest:*:*:*"
    ],
    "severity": "Medium"
}
References

Affected packages

Bitnami / discourse

Package

Name
discourse
Purl
pkg:bitnami/discourse

Severity

  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
2026.1.0
Fixed
2026.1.2
Introduced
2026.2.0
Fixed
2026.2.1
Introduced
2026.3.0
Fixed
2026.4.0

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/discourse/BIT-discourse-2026-28282.json"