{"id":"CVE-2026-84302","summary":"Discourse: Non-participant moderators can read, edit, and delete PM content through Discourse AI reviewables","details":"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.","aliases":["GHSA-3rx9-fqgh-wfpc"],"modified":"2026-09-26T03:47:58.205156401Z","published":"2026-09-24T16:49:56.499Z","database_specific":{"cwe_ids":["CWE-862"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84302.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84302.json"},{"type":"ADVISORY","url":"https://github.com/discourse/discourse/security/advisories/GHSA-3rx9-fqgh-wfpc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84302"},{"type":"FIX","url":"https://github.com/discourse/discourse/commit/1566d04524c01472375944bbf7b198dd09a99427"},{"type":"FIX","url":"https://github.com/discourse/discourse/commit/23488b72a200228e805c4e6d970fbad216d328c5"},{"type":"FIX","url":"https://github.com/discourse/discourse/commit/38d10c0e5d1b76540d2860455e0290f8e975c9fd"},{"type":"FIX","url":"https://github.com/discourse/discourse/commit/b323702d87cd82c327c116d9566477f3c4f9635f"},{"type":"FIX","url":"https://github.com/discourse/discourse/pull/42091"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/discourse/discourse","events":[{"introduced":"0"},{"introduced":"06d03da34c4ed09ea59f917f045ba250d2b6320d"},{"introduced":"640840d818f4ee9375829ece0ef452923bb0c012"},{"introduced":"322d3c0ac6a8f133b3f82875e9dbbe310f638c1b"},{"fixed":"ded677e00beb0e9bae6e70b69582aecfb72b5477"},{"fixed":"b6419ddb26f109092cdc5fdc4b2624fe95a5e8d4"},{"fixed":"3a87be49d621faddf5cea3f6a090adc9b7cbb7e8"},{"fixed":"94190ccb5176eb4ab1f2b509fcecc3fc682dadae"},{"fixed":"1566d04524c01472375944bbf7b198dd09a99427"},{"fixed":"23488b72a200228e805c4e6d970fbad216d328c5"},{"fixed":"38d10c0e5d1b76540d2860455e0290f8e975c9fd"},{"fixed":"b323702d87cd82c327c116d9566477f3c4f9635f"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"2026.7.0"},{"introduced":"2026.6.0-latest"},{"fixed":"2026.6.1"},{"introduced":"2026.5.0-latest"},{"fixed":"2026.5.2"},{"introduced":"2026.1.0-latest"},{"fixed":"2026.1.6"}]}}],"versions":["_gh-attach-assets","v2026.1.5","v2026.5.1","v2026.6.0","v2026.7.0-latest","v2026.5.0","v2026.6.0-latest","v2026.1.4","v2026.5.0-latest.1","v2026.5.0-latest","v2026.1.3","v2026.1.2","v2026.1.1","v2026.1.0","stable","esr","v2026.1.0-latest"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84302.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N"}]}