Rocket.Chat: Authenticated Arbitrary Data Export Theft via Mass Assignment in sendFileMessage

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Summary

CVECVE-2026-45687
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-24 21:16:53 UTC
Updated2026-06-25 14:19:40 UTC
DescriptionRocket.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.

Risk And Classification

Primary CVSS: v3.1 8.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Problem Types: CWE-915 | CWE-915 CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.5HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
3.1CNADECLARED8.5HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA RocketChat Rocket.Chat affected >= 8.5.0-rc.0, < 8.5.0 Not specified
CNA RocketChat Rocket.Chat affected >= 8.4.0-rc.0, < 8.4.1 Not specified
CNA RocketChat Rocket.Chat affected >= 8.3.0-rc.0, < 8.3.3 Not specified
CNA RocketChat Rocket.Chat affected >= 8.2.0-rc.0, < 8.2.3 Not specified
CNA RocketChat Rocket.Chat affected >= 8.1.0-rc.0, < 8.1.4 Not specified
CNA RocketChat Rocket.Chat affected >= 8.0.0-rc.0, < 8.0.5 Not specified
CNA RocketChat Rocket.Chat affected >= 7.11.0-rc.0, < 7.13.7 Not specified
CNA RocketChat Rocket.Chat affected < 7.10.11 Not specified

References

ReferenceSourceLinkTags
github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-fhc2-x8cp-c5ch [email protected] github.com
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