CVE-2026-65645

{"id": "CVE-2026-65645", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-65645", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-27T17:46:23.910812Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "affected": [{"source": "support@hackerone.com", "affectedData": [{"vendor": "Rocket.Chat", "product": "Rocket.Chat", "versions": [{"status": "affected", "version": "0", "lessThan": "8.8.0", "versionType": "semver"}, {"status": "affected", "version": "0", "lessThan": "8.7.1", "versionType": "semver"}, {"status": "affected", "version": "0", "lessThan": "8.6.2", "versionType": "semver"}, {"status": "affected", "version": "0", "lessThan": "8.5.3", "versionType": "semver"}, {"status": "affected", "version": "0", "lessThan": "8.4.6", "versionType": "semver"}, {"status": "affected", "version": "0", "lessThan": "8.3.8", "versionType": "semver"}, {"status": "affected", "version": "0", "lessThan": "8.2.8", "versionType": "semver"}, {"status": "affected", "version": "0", "lessThan": "8.1.8", "versionType": "semver"}, {"status": "affected", "version": "0", "lessThan": "7.10.15", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-08-21T04:18:14.690", "references": [{"url": "https://github.com/RocketChat/Rocket.Chat/pull/41814", "tags": ["Patch", "Vendor Advisory"], "source": "support@hackerone.com"}, {"url": "https://hackerone.com/reports/3852135", "tags": ["Third Party Advisory", "Issue Tracking"], "source": "support@hackerone.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-20"}]}], "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"}], "lastModified": "2026-09-04T18:27:21.523", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "83AFD920-8EAC-445A-9EDE-39A405C7EFCF", "versionEndExcluding": "7.10.15"}, {"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F0047835-D014-4735-9D38-AD6E91E69DC2", "versionEndExcluding": "8.1.8", "versionStartIncluding": "8.1.0"}, {"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7BF9BDAA-1A56-43C5-ACFC-4849A21CD601", "versionEndExcluding": "8.2.8", "versionStartIncluding": "8.2.0"}, {"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "36B7912B-900A-4B96-BAE2-9CA5834BB25A", "versionEndExcluding": "8.3.8", "versionStartIncluding": "8.3.0"}, {"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5314C8E0-FBBB-4DB6-9729-D6A41DEE57AF", "versionEndExcluding": "8.4.6", "versionStartIncluding": "8.4.0"}, {"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4E8FA572-5D43-4253-A81E-F0F4FC3F3189", "versionEndExcluding": "8.5.3", "versionStartIncluding": "8.5.0"}, {"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "773C4B37-A14E-4898-8501-3F89C796CFC1", "versionEndExcluding": "8.6.2", "versionStartIncluding": "8.6.0"}, {"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:8.7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "89603D12-AAF4-4065-BDE9-45EB52E29EE0"}], "operator": "OR"}]}], "sourceIdentifier": "support@hackerone.com"}