CVE-2026-48929 | Rocket.Chat in versions <8.5.1, <8.4.4, <8.3.6, <8.2.6, <8.1… | CVSS 7.5 HIGH

Description

Rocket.Chat in versions <8.5.1, <8.4.4, <8.3.6, <8.2.6, <8.1.6, <8.0.7, <7.13.9, and <7.10.13 is vulnerable to unauthenticated file deletion. The deleteFileMessage Meteor method permanently deletes any uploaded file by ID without requiring authentication. When called via an unauthenticated DDP WebSocket connection, Meteor.userId() returns null, causing the authorization check to be skipped. Execution falls through to FileUpload.getStore('Uploads').deleteById(fileID), which removes the file from storage and database unconditionally. File IDs are discoverable from public channel message payloads and download URLs.

Metadata

CVE ID: CVE-2026-48929
State: PUBLISHED
Assigner: hackerone
Reserved: 2026-05-26 15:00 UTC
Published: 2026-06-16 23:08 UTC
Last updated: 2026-06-17 15:02 UTC
Primary CWE: CWE-287
CWE-287 Improper Authentication - Generic
Vendor / Product: Rocket.Chat / Rocket.Chat
Sources: cve.org · NVD

Severity & Metrics

7.5 HIGH CVSS 3.0

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
Rocket.Chat	Rocket.Chat	—	0 < 8.5.1, 0 < 8.4.4, 0 < 8.3.6, 0 < 8.2.6 …

Weakness (CWE)

CWE	Source	Description
CWE-287	cna	CWE-287 Improper Authentication - Generic

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.5	HIGH	3.0	cna	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References (2)