{"api_version":"1","generated_at":"2026-08-27T03:36:33+00:00","cve":"CVE-2026-65645","urls":{"html":"https://cve.report/CVE-2026-65645","api":"https://cve.report/api/cve/CVE-2026-65645.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-65645","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-65645"},"summary":{"title":"CVE-2026-65645","description":"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","state":"PUBLISHED","assigner":"hackerone","published_at":"2026-08-21 04:18:14","updated_at":"2026-08-21 04:18:14"},"problem_types":[],"metrics":[],"references":[{"url":"https://github.com/RocketChat/Rocket.Chat/pull/41814","name":"https://github.com/RocketChat/Rocket.Chat/pull/41814","refsource":"support@hackerone.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://hackerone.com/reports/3852135","name":"https://hackerone.com/reports/3852135","refsource":"support@hackerone.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-65645","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65645","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Rocket.Chat","product":"Rocket.Chat","version":"affected 8.8.0 semver","platforms":[]},{"source":"CNA","vendor":"Rocket.Chat","product":"Rocket.Chat","version":"affected 8.7.1 semver","platforms":[]},{"source":"CNA","vendor":"Rocket.Chat","product":"Rocket.Chat","version":"affected 8.6.2 semver","platforms":[]},{"source":"CNA","vendor":"Rocket.Chat","product":"Rocket.Chat","version":"affected 8.5.3 semver","platforms":[]},{"source":"CNA","vendor":"Rocket.Chat","product":"Rocket.Chat","version":"affected 8.4.6 semver","platforms":[]},{"source":"CNA","vendor":"Rocket.Chat","product":"Rocket.Chat","version":"affected 8.3.8 semver","platforms":[]},{"source":"CNA","vendor":"Rocket.Chat","product":"Rocket.Chat","version":"affected 8.2.8 semver","platforms":[]},{"source":"CNA","vendor":"Rocket.Chat","product":"Rocket.Chat","version":"affected 8.1.8 semver","platforms":[]},{"source":"CNA","vendor":"Rocket.Chat","product":"Rocket.Chat","version":"affected 7.10.15 semver","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Aang (iamaangx028)","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"65645","cve":"CVE-2026-65645","epss":"0.001450000","percentile":"0.040240000","score_date":"2026-08-24","updated_at":"2026-08-25 00:11:34"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"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"}]}],"credits":[{"lang":"en","type":"finder","value":"Aang (iamaangx028)"}],"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"}],"providerMetadata":{"dateUpdated":"2026-08-21T02:53:43.305Z","orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","shortName":"hackerone"},"references":[{"url":"https://hackerone.com/reports/3852135"},{"url":"https://github.com/RocketChat/Rocket.Chat/pull/41814"}]}},"cveMetadata":{"assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","assignerShortName":"hackerone","cveId":"CVE-2026-65645","datePublished":"2026-08-21T02:53:43.305Z","dateReserved":"2026-07-22T15:00:06.104Z","dateUpdated":"2026-08-21T02:53:43.305Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-21 04:18:14","lastModifiedDate":"2026-08-21 04:18:14","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"65645","Ordinal":"1","Title":"CVE-2026-65645","CVE":"CVE-2026-65645","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"65645","Ordinal":"1","NoteData":"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","Type":"Description","Title":"CVE-2026-65645"}]}}}