CVE-2026-45687 PUBLISHED

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

Assigner: GitHub_M
Reserved: 13.05.2026 Published: 24.06.2026 Updated: 24.06.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CVSS Score: 8.5

Product Status

Vendor RocketChat
Product Rocket.Chat
Versions
  • Version >= 8.5.0-rc.0, < 8.5.0 is affected
  • Version >= 8.4.0-rc.0, < 8.4.1 is affected
  • Version >= 8.3.0-rc.0, < 8.3.3 is affected
  • Version >= 8.2.0-rc.0, < 8.2.3 is affected
  • Version >= 8.1.0-rc.0, < 8.1.4 is affected
  • Version >= 8.0.0-rc.0, < 8.0.5 is affected
  • Version >= 7.11.0-rc.0, < 7.13.7 is affected
  • Version < 7.10.11 is affected

References

Problem Types

  • CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes CWE