{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72724", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-10T13:48:09.545Z", "datePublished": "2026-08-10T15:59:53.965Z", "dateUpdated": "2026-08-10T15:59:53.965Z"}, "containers": {"cna": {"title": "Discourse: Private Chat Threat Message Disclosure via Chat Onebox Channel/Threat ID Mismatch", "problemTypes": [{"descriptions": [{"cweId": "CWE-639", "lang": "en", "description": "CWE-639: Authorization Bypass Through User-Controlled Key", "type": "CWE"}]}], "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"}}], "references": [{"name": "https://github.com/discourse/discourse/security/advisories/GHSA-8g98-fvfc-9w48", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/discourse/discourse/security/advisories/GHSA-8g98-fvfc-9w48"}, {"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/pull/42092", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/pull/42092"}, {"name": "https://github.com/discourse/discourse/pull/42093", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/pull/42093"}, {"name": "https://github.com/discourse/discourse/pull/42094", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/pull/42094"}, {"name": "https://github.com/discourse/discourse/commit/1276d7032af8803956c74ae87ccfd976938dcd75", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/1276d7032af8803956c74ae87ccfd976938dcd75"}, {"name": "https://github.com/discourse/discourse/commit/45ab6d54076de9ca4965888974d4416d5b48e83c", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/45ab6d54076de9ca4965888974d4416d5b48e83c"}, {"name": "https://github.com/discourse/discourse/commit/49efe1d7f098f2ce7301908815a211cc9248270f", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/49efe1d7f098f2ce7301908815a211cc9248270f"}, {"name": "https://github.com/discourse/discourse/commit/dc54846f0754799591717b6018343e49524e41ce", "tags": ["x_refsource_MISC"], "url": "https://github.com/discourse/discourse/commit/dc54846f0754799591717b6018343e49524e41ce"}], "affected": [{"vendor": "discourse", "product": "discourse", "versions": [{"version": "< 2026.1.6", "status": "affected"}, {"version": ">= 2026.5.0-latest, < 2026.5.2", "status": "affected"}, {"version": ">= 2026.6.0-latest, < 2026.6.1", "status": "affected"}, {"version": ">= 2026.7.0-latest, < 2026.7.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-10T15:59:53.965Z"}, "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, plugins/chat/lib/chat/onebox_handler.rb resolves Chat::Thread by route thread_id independently of the route channel_id before checking whether the user can preview the selected chat channel. An authenticated user can pair a public channel ID with a private thread ID in a /onebox.json request and obtain private thread message content. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0."}], "source": {"advisory": "GHSA-8g98-fvfc-9w48", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"created": "2026-08-10T18:15:11.380176+00:00", "updated": "2026-08-10T18:15:11.380182+00:00", "vendors": []}