Vulnerability Report

CVE-2026-48929

Title: Unauthenticated File Deletion in Rocket.Chat

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2026-48929.

CWE Category CWE-287

Published Date Jun 17, 2026

Modified Date Jun 18, 2026

Exploit Status Not Found

Score 7.5 CVSS v3.0

Exploit Probability (EPSS)

0.64%

Vulnerability Summary

CVE-2026-48929: 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.

Impacted Vendors

rocketchat 1

rocket.chat 1

Reference Links

https://github.com/RocketChat/Rocket.Chat/pull/40889/ https://hackerone.com/reports/3611837

CVSS v3.0

Source Entity [email protected]

Severity HIGH

7.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-48929 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

June 18, 2026 MODIFIED

Vulnerability data updated via NVD.

June 18, 2026 MODIFIED

Vulnerability data updated via NVD.

June 17, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.