{"id":"CVE-2026-32618","state":"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.","publishedAt":"2026-03-31T17:40:41.484Z","updatedAt":"2026-04-03T16:20:00.471Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["discourse discourse"],"affected":[{"vendor":"discourse","product":"discourse","versions":[{"version":">= 2026.1.0-latest, < 2026.1.3","status":"affected"},{"version":">= 2026.2.0-latest, < 2026.2.2","status":"affected"},{"version":">= 2026.3.0-latest, < 2026.3.0","status":"affected"}]}],"references":["https://github.com/discourse/discourse/security/advisories/GHSA-pc8p-w2m7-hgf3","https://github.com/discourse/discourse/commit/81fd89e744058e509412158e5e6ac90c856ade64"],"weaknesses":["CWE-200"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/32xxx/CVE-2026-32618.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-32618","state":"PUBLISHED","datePublished":"2026-03-31T17:40:41.484Z","dateUpdated":"2026-04-03T16:20:00.471Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-12T15:29:36.557Z"},"containers":{"cna":{"title":"Discourse: Unauthorized channel membership inference via excluded_memberships_channel_id","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"discourse","product":"discourse","versions":[{"version":">= 2026.1.0-latest, < 2026.1.3","status":"affected"},{"version":">= 2026.2.0-latest, < 2026.2.2","status":"affected"},{"version":">= 2026.3.0-latest, < 2026.3.0","status":"affected"}]}],"references":[{"url":"https://github.com/discourse/discourse/security/advisories/GHSA-pc8p-w2m7-hgf3","name":"https://github.com/discourse/discourse/security/advisories/GHSA-pc8p-w2m7-hgf3","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/discourse/discourse/commit/81fd89e744058e509412158e5e6ac90c856ade64","name":"https://github.com/discourse/discourse/commit/81fd89e744058e509412158e5e6ac90c856ade64","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-200","lang":"en","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-31T17:40:41.484Z"},"source":{"advisory":"GHSA-pc8p-w2m7-hgf3","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-03T16:19:17.031019Z","id":"CVE-2026-32618","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-03T16:20:00.471Z"}}]}}}