{"id":"CVE-2026-84302","title":"Discourse is an open-source discussion platform","summary":"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 parti…","severity":"medium","cvss":4.2,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N","cwe":["CWE-862"],"vendor":"discourse","product":"discourse","affected":["discourse < 2026.7.0","discourse >= 2026.6.0-latest, < 2026.6.1","discourse >= 2026.5.0-latest, < 2026.5.2","discourse >= 2026.1.0-latest, < 2026.1.6"],"published":"2026-09-24","updated":"2026-09-24","sourceUpdated":"2026-09-24T18:19:03.923","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84302","references":[{"url":"https://github.com/discourse/discourse/commit/1566d04524c01472375944bbf7b198dd09a99427","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/commit/23488b72a200228e805c4e6d970fbad216d328c5","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/commit/38d10c0e5d1b76540d2860455e0290f8e975c9fd","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/commit/b323702d87cd82c327c116d9566477f3c4f9635f","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/pull/42091","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/security/advisories/GHSA-3rx9-fqgh-wfpc","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-24T17:04:31.550424Z"},"ingestedAt":"2026-09-24T17:48:30.385Z","slug":"CVE-2026-84302","body":"## Overview\n\nDiscourse 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":23,"depthScoreParts":{"impact":23.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}