High
Rocket.Chat: Authenticated Arbitrary Data Export Theft via Mass Assignment in sendFileMessage
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-45687
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 21:27 UTC · Revision 1
Source evidence
Rocket.Chat: Authenticated Arbitrary Data Export Theft via Mass Assignment in sendFileMessage
core-osv · Original sourcePublished 24 Jun 2026, 20:55 UTC
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.
osv:CVE-2026-45687
Complete source record
{
"id": "df589d09f0d1f0f579e1b5be2d2f48357fa0d5dcb32c9f8d509baa102d3f0150",
"url": "https://osv.dev/vulnerability/CVE-2026-45687",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Rocket.Chat: Authenticated Arbitrary Data Export Theft via Mass Assignment in sendFileMessage",
"summary": "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.",
"evidence": "osv:CVE-2026-45687",
"products": [],
"severity": "high",
"structured": {
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"aliases": [
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"GHSA-fhc2-x8cp-c5ch"
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"metrics": [
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"type": "CVSS_V3",
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"modified": "2026-10-28T02:30:39.620341126Z",
"provider": "osv",
"references": [
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"https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-fhc2-x8cp-c5ch",
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"source_id": "core-osv",
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"published_at": "2026-06-24T20:55:25.918+00:00"
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