{"id":"CVE-2026-45687","state":"PUBLISHED","title":"Rocket.Chat: Authenticated Arbitrary Data Export Theft via Mass Assignment in sendFileMessage","description":"Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11, Rocket.Chat's sendFileMessage DDP method passes the entire attacker-supplied file object into Uploads.updateFileComplete, which merges it directly into a MongoDB $set update via Object.assign. There is no allow-list of writable fields. An attacker can therefore rewrite any column on their own upload record, notably store and the store-specific path fields. This vulnerability is fixed in 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11.","publishedAt":"2026-06-24T20:55:25.918Z","updatedAt":"2026-06-26T18:43:50.524Z","severity":{"score":8.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["RocketChat Rocket.Chat"],"affected":[{"vendor":"RocketChat","product":"Rocket.Chat","versions":[{"version":">= 8.5.0-rc.0, < 8.5.0","status":"affected"},{"version":">= 8.4.0-rc.0, < 8.4.1","status":"affected"},{"version":">= 8.3.0-rc.0, < 8.3.3","status":"affected"},{"version":">= 8.2.0-rc.0, < 8.2.3","status":"affected"},{"version":">= 8.1.0-rc.0, < 8.1.4","status":"affected"},{"version":">= 8.0.0-rc.0, < 8.0.5","status":"affected"},{"version":">= 7.11.0-rc.0, < 7.13.7","status":"affected"},{"version":"< 7.10.11","status":"affected"}]}],"references":["https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-fhc2-x8cp-c5ch"],"weaknesses":["CWE-915"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45687.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45687","state":"PUBLISHED","datePublished":"2026-06-24T20:55:25.918Z","dateUpdated":"2026-06-26T18:43:50.524Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-13T04:38:01.164Z"},"containers":{"cna":{"title":"Rocket.Chat: Authenticated Arbitrary Data Export Theft via Mass Assignment in sendFileMessage","descriptions":[{"lang":"en","value":"Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11, Rocket.Chat's sendFileMessage DDP method passes the entire attacker-supplied file object into Uploads.updateFileComplete, which merges it directly into a MongoDB $set update via Object.assign. There is no allow-list of writable fields. An attacker can therefore rewrite any column on their own upload record, notably store and the store-specific path fields. This vulnerability is fixed in 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11."}],"affected":[{"vendor":"RocketChat","product":"Rocket.Chat","versions":[{"version":">= 8.5.0-rc.0, < 8.5.0","status":"affected"},{"version":">= 8.4.0-rc.0, < 8.4.1","status":"affected"},{"version":">= 8.3.0-rc.0, < 8.3.3","status":"affected"},{"version":">= 8.2.0-rc.0, < 8.2.3","status":"affected"},{"version":">= 8.1.0-rc.0, < 8.1.4","status":"affected"},{"version":">= 8.0.0-rc.0, < 8.0.5","status":"affected"},{"version":">= 7.11.0-rc.0, < 7.13.7","status":"affected"},{"version":"< 7.10.11","status":"affected"}]}],"references":[{"url":"https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-fhc2-x8cp-c5ch","name":"https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-fhc2-x8cp-c5ch","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-915","lang":"en","description":"CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-24T20:55:25.918Z"},"source":{"advisory":"GHSA-fhc2-x8cp-c5ch","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-26T17:51:10.359261Z","id":"CVE-2026-45687","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-26T18:43:50.524Z"}}]}}}