{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-84302","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-09-01T16:17:43.078Z","datePublished":"2026-09-24T16:49:56.499Z","dateUpdated":"2026-09-24T17:04:51.257Z"},"containers":{"cna":{"title":"Discourse: Non-participant moderators can read, edit, and delete PM content through Discourse AI reviewables","problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.2,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/discourse/discourse/security/advisories/GHSA-3rx9-fqgh-wfpc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/discourse/discourse/security/advisories/GHSA-3rx9-fqgh-wfpc"},{"name":"https://github.com/discourse/discourse/pull/42091","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/pull/42091"},{"name":"https://github.com/discourse/discourse/commit/1566d04524c01472375944bbf7b198dd09a99427","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/commit/1566d04524c01472375944bbf7b198dd09a99427"},{"name":"https://github.com/discourse/discourse/commit/23488b72a200228e805c4e6d970fbad216d328c5","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/commit/23488b72a200228e805c4e6d970fbad216d328c5"},{"name":"https://github.com/discourse/discourse/commit/38d10c0e5d1b76540d2860455e0290f8e975c9fd","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/commit/38d10c0e5d1b76540d2860455e0290f8e975c9fd"},{"name":"https://github.com/discourse/discourse/commit/b323702d87cd82c327c116d9566477f3c4f9635f","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/commit/b323702d87cd82c327c116d9566477f3c4f9635f"}],"affected":[{"vendor":"discourse","product":"discourse","versions":[{"version":"< 2026.7.0","status":"affected"},{"version":">= 2026.6.0-latest, < 2026.6.1","status":"affected"},{"version":">= 2026.5.0-latest, < 2026.5.2","status":"affected"},{"version":">= 2026.1.0-latest, < 2026.1.6","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-24T16:49:56.499Z"},"descriptions":[{"lang":"en","value":"Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, Discourse AI reviewables associated with private messages could appear in the moderator review queue of a moderator who was not a participant in the message. Reviewable visibility filtering did not restrict private-message reviewables to the audience permitted to access the underlying private-message topic, allowing the moderator to read otherwise confidential content. Depending on the available reviewable action, the moderator could also modify the private message by closing its topic or deleting a post. Exploitation requires an authenticated moderator account and a pre-existing Discourse AI reviewable associated with a private message. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0."}],"source":{"advisory":"GHSA-3rx9-fqgh-wfpc","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-24T17:04:31.550424Z","id":"CVE-2026-84302","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-24T17:04:51.257Z"}}]}}