CVE-2026-84302

{"id": "CVE-2026-84302", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-84302", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-24T17:04:31.550424Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.2, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 0.5}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "discourse", "product": "discourse", "versions": [{"status": "affected", "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"}]}]}], "published": "2026-09-24T17:17:06.793", "references": [{"url": "https://github.com/discourse/discourse/commit/1566d04524c01472375944bbf7b198dd09a99427", "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/commit/23488b72a200228e805c4e6d970fbad216d328c5", "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/commit/38d10c0e5d1b76540d2860455e0290f8e975c9fd", "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/commit/b323702d87cd82c327c116d9566477f3c4f9635f", "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/pull/42091", "source": "security-advisories@github.com"}, {"url": "https://github.com/discourse/discourse/security/advisories/GHSA-3rx9-fqgh-wfpc", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-862"}]}], "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."}], "lastModified": "2026-09-24T18:19:03.923", "sourceIdentifier": "security-advisories@github.com"}