TI-2026-36188 Aliases CVE-2026-48929 GHSA-f55j-xv27-8cwj

Improper authentication in Rocket.Chat

MEDIUM 40CWE-287Published 2026-06-16 · Updated 2026-06-17

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00723 54th percentileScored 2026-11-07

Fix Fixed Rocket.Chat (Rocket.Chat): 8.5.1, 8.4.4, 8.3.6 +5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Rocket.Chat	Rocket.Chat	before 8.5.1; before 8.4.4; before 8.3.6; before 8.2.6; before 8.1.6; before 8.0.7; before 7.13.9; before 7.10.13	8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, 7.10.13	Patch available	CNA

Rocket.Chat VendorRocket.Chat Affected before 8.5.1; before 8.4.4; before 8.3.6; before 8.2.6; before 8.1.6; before 8.0.7; before 7.13.9; before 7.10.13 Fixed in 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, 7.10.13 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:rocket.chat:rocket.chat::::::::	before 7.10.13; 7.13.0 to before 7.13.9; 8.0.0 to before 8.0.7; 8.1.0 to before 8.1.6; 8.2.0 to before 8.2.6; 8.3.0 to before 8.3.6; 8.4.0 to before 8.4.4; 8.5.0 to before 8.5.1	Vulnerable	Rocket.Chat

cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:* Versions before 7.10.13; 7.13.0 to before 7.13.9; 8.0.0 to before 8.0.7; 8.1.0 to before 8.1.6; 8.2.0 to before 8.2.6; 8.3.0 to before 8.3.6; 8.4.0 to before 8.4.4; 8.5.0 to before 8.5.1 Vulnerable ·Rocket.Chat

Remediation

Fix · CNA Rocket.Chat (Rocket.Chat) Fixed in 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, 7.10.13

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-06-16
Rocket.Chat 7.10.13, 7.13.9 and 6 more versions
2 records Highest priority Priority MEDIUM 2 MEDIUM
Other records, highest priority first
- TI-2026-35962 Improper access control in Rocket.ChatPriority MEDIUM 46
Show all 2 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-48929
2026-10-03 Alias added: GHSA-f55j-xv27-8cwj

References

Patch 1

https://github.com/RocketChat/Rocket.Chat/pull/40889/

Advisory 1

https://hackerone.com/reports/3611837

TI-2021-05772 A improper input sanitization vulnerability exists in Rocket.Chat server 3.11, 3.12 &… CVSS 3.1CRITICAL 9.8
TI-2022-13921 SQL injection in Rocket.Chat CVSS 3.1HIGH 8.8
TI-2026-18910 Rocket.Chat Unauthorized Access to OAuth App Details CVSS 3.1HIGH 7.7
TI-2022-12398 Improper authentication in Rocket.Chat Mobile app CVSS 3.1MEDIUM 6.8
TI-2022-13929 Information disclosure in Rocket.Chat CVSS 3.1MEDIUM 6.5
TI-2022-15931 Cross-site scripting in Rocket.chat CVSS 3.1MEDIUM 5.4

See all 61 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences