CVE-2026-45687
HIGHRocket.Chat: Authenticated Arbitrary Data Export Theft via Mass Assignment in sendFileMessage
Title source: cnaDescription
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.
References (1)
Core 1
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-fhc2-x8cp-c5ch
Scores
CVSS v3
8.5
EPSS
0.0021
EPSS Percentile
10.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-915
Status
published
Products (8)
RocketChat/Rocket.Chat
< 7.10.11
RocketChat/Rocket.Chat
>= 7.11.0-rc.0, < 7.13.7
RocketChat/Rocket.Chat
>= 8.0.0-rc.0, < 8.0.5
RocketChat/Rocket.Chat
>= 8.1.0-rc.0, < 8.1.4
RocketChat/Rocket.Chat
>= 8.2.0-rc.0, < 8.2.3
RocketChat/Rocket.Chat
>= 8.3.0-rc.0, < 8.3.3
RocketChat/Rocket.Chat
>= 8.4.0-rc.0, < 8.4.1
RocketChat/Rocket.Chat
>= 8.5.0-rc.0, < 8.5.0
Published
Jun 24, 2026
Tracked Since
Jun 25, 2026