{"id":"CVE-2026-32618","aliases":["BIT-discourse-2026-32618","EUVD-2026-17555","GHSA-pc8p-w2m7-hgf3"],"status":"published","title":"Discourse: Unauthorized channel membership inference via excluded_memberships_channel_id","description":"Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, there is possible channel membership inference from chat user search without authorization. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00208,"percentile":0.1108,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-200"],"published":"2026-03-31T17:40:41Z","modified":"2026-10-28T02:30:43Z","fixes":[{"ecosystem":"Bitnami","package":"discourse","fixed_in":["2026.1.3","2026.2.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"discourse","ranges":[{"type":"SEMVER","events":[{"introduced":"2026.1.0"},{"fixed":"2026.1.3"},{"introduced":"2026.2.0"},{"fixed":"2026.2.2"}]}]}],"products":[{"vendor":"discourse","product":"discourse"}],"references":[{"url":"https://github.com/discourse/discourse/security/advisories/GHSA-pc8p-w2m7-hgf3","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory"]},{"url":"https://github.com/discourse/discourse/commit/81fd89e744058e509412158e5e6ac90c856ade64","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32618","tags":["web","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32618.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-32618","title":"Discourse: Unauthorized channel membership inference via excluded_memberships_channel_id","description":"Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, there is possible channel membership inference from chat user search without authorization. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.","status":"published","published":"2026-03-31T17:40:41.484Z","modified":"2026-04-03T16:20:00.471Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:19:57.100857Z"}],"euvd":[{"id":"EUVD-2026-17555","description":"Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, there is possible channel membership inference from chat user search without authorization. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.","status":"published","published":"2026-03-31T17:40:41Z","modified":"2026-04-03T16:20:00Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T19:25:16.92155Z"}],"nvd":[{"id":"CVE-2026-32618","description":"Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, there is possible channel membership inference from chat user search without authorization. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.","status":"published","published":"2026-03-31T18:16:50.37Z","modified":"2026-07-24T20:10:00.147Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:12:12.261218Z"}],"osv":[{"id":"CVE-2026-32618","title":"Discourse: Unauthorized channel membership inference via excluded_memberships_channel_id","description":"Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, there is possible channel membership inference from chat user search without authorization. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.","status":"published","published":"2026-03-31T17:40:41.484Z","modified":"2026-10-28T02:30:43.089920759Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:45:01.548715Z"},{"id":"BIT-discourse-2026-32618","title":"Discourse: Unauthorized channel membership inference via excluded_memberships_channel_id","description":"Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, there is possible channel membership inference from chat user search without authorization. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.","status":"published","published":"2026-04-07T08:43:55.159Z","modified":"2026-09-08T08:46:30.969225817Z","updated_at":"2026-11-02T15:28:29.152062Z"}]}}