{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-65645", "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "state": "PUBLISHED", "assignerShortName": "hackerone", "dateReserved": "2026-07-22T15:00:06.104Z", "datePublished": "2026-08-21T02:53:43.305Z", "dateUpdated": "2026-08-21T02:53:43.305Z"}, "containers": {"cna": {"descriptions": [{"lang": "en", "value": "Rocket.Chat in versions before 8.8.0, 8.7.1, 8.6.2, 8.5.3, 8.4.6. 8.3.8, 8.2.8, 8.1.8, and 7.10.15, the Meteor DDP methods getThreadsList and getThreadMessages accept rid / tmid as raw, untyped parameters with no schema validation. A MongoDB operator object (e.g. {\"$gt\": \"4\"}) can be substituted for a string room-id or message-id. The authorization check resolves to a room the attacker already has access to, while the downstream data query fans out across all rooms - disclosing private thread parents and their full reply content to any low-privilege authenticated user.\nThe REST route chat.getThreadsList was patched in v5.0 (HackerOne report #1446767) by adding rid: {type:'string'} AJV validation. The equivalent DDP method was never given the same fix and remains exploitable"}], "affected": [{"defaultStatus": "unaffected", "vendor": "Rocket.Chat", "product": "Rocket.Chat", "versions": [{"version": "0", "status": "affected", "lessThan": "8.8.0", "versionType": "semver"}, {"version": "0", "status": "affected", "lessThan": "8.7.1", "versionType": "semver"}, {"version": "0", "status": "affected", "lessThan": "8.6.2", "versionType": "semver"}, {"version": "0", "status": "affected", "lessThan": "8.5.3", "versionType": "semver"}, {"version": "0", "status": "affected", "lessThan": "8.4.6", "versionType": "semver"}, {"version": "0", "status": "affected", "lessThan": "8.3.8", "versionType": "semver"}, {"version": "0", "status": "affected", "lessThan": "8.2.8", "versionType": "semver"}, {"version": "0", "status": "affected", "lessThan": "8.1.8", "versionType": "semver"}, {"version": "0", "status": "affected", "lessThan": "7.10.15", "versionType": "semver"}]}], "references": [{"url": "https://hackerone.com/reports/3852135"}, {"url": "https://github.com/RocketChat/Rocket.Chat/pull/41814"}], "credits": [{"lang": "en", "value": "Aang (iamaangx028)", "type": "finder"}], "providerMetadata": {"orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "shortName": "hackerone", "dateUpdated": "2026-08-21T02:53:43.305Z"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Rocket.Chat", "vendor": "Rocket.Chat", "versions": [{"lessThan": "8.8.0", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "8.7.1", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "8.6.2", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "8.5.3", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "8.4.6", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "8.3.8", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "8.2.8", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "8.1.8", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "7.10.15", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "support@hackerone.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Rocket.Chat in versions before 8.8.0, 8.7.1, 8.6.2, 8.5.3, 8.4.6. 8.3.8, 8.2.8, 8.1.8, and 7.10.15, the Meteor DDP methods getThreadsList and getThreadMessages accept rid / tmid as raw, untyped parameters with no schema validation. A MongoDB operator object (e.g. {\"$gt\": \"4\"}) can be substituted for a string room-id or message-id. The authorization check resolves to a room the attacker already has access to, while the downstream data query fans out across all rooms - disclosing private thread parents and their full reply content to any low-privilege authenticated user.\nThe REST route chat.getThreadsList was patched in v5.0 (HackerOne report #1446767) by adding rid: {type:'string'} AJV validation. The equivalent DDP method was never given the same fix and remains exploitable"}], "id": "CVE-2026-65645", "lastModified": "2026-08-21T04:18:14.690", "metrics": {}, "published": "2026-08-21T04:18:14.690", "references": [{"source": "support@hackerone.com", "url": "https://github.com/RocketChat/Rocket.Chat/pull/41814"}, {"source": "support@hackerone.com", "url": "https://hackerone.com/reports/3852135"}], "sourceIdentifier": "support@hackerone.com", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,8.8.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,8.7.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,8.6.2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,8.5.3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,8.4.6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,8.3.8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,8.2.8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,8.1.8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.10.15)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Rocket.Chat", "source": "cna", "vendor": "Rocket.Chat"}, "product": "rocket.chat", "vendor": "rocket.chat"}], "created": "2026-08-21T04:30:09.458641+00:00", "title": "MongoDB Operator Injection Exposes Private Threads in Rocket.Chat", "updated": "2026-08-21T04:30:09.570905+00:00", "vendors": ["rocket.chat", "rocket.chat$PRODUCT$rocket.chat"], "weaknesses": ["CWE-20"]}