CVE-2026-45687
Rocket.Chat: Authenticated Arbitrary Data Export Theft via Mass Assignment in sendFileMessage
CVSS Score
8.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-915 |
| Vendor | rocketchat |
| Product | rocket.chat |
| Published | Jun 24, 2026 |
Stay Ahead of the Next One
Get instant alerts for rocketchat rocket.chat
Be the first to know when new high vulnerabilities affecting rocketchat rocket.chat are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None
Affected Versions
RocketChat / Rocket.Chat
>= 8.5.0-rc.0, < 8.5.0 >= 8.4.0-rc.0, < 8.4.1 >= 8.3.0-rc.0, < 8.3.3 >= 8.2.0-rc.0, < 8.2.3 >= 8.1.0-rc.0, < 8.1.4 >= 8.0.0-rc.0, < 8.0.5 >= 7.11.0-rc.0, < 7.13.7 < 7.10.11