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CVE-2026-30833

MEDIUM CVSS 4.0: 6.9 EPSS 0.02%
Updated Mar 13, 2026
Rocket.Chat
Parameter Value
CVSS 6.9 (MEDIUM)
Affected Versions 7.11.0 — 8.1.1
Fixed In 7.10.8
Type CWE-943
Vendor Rocket.Chat
Public PoC No

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to versions 7.10.8, 7.11.5, 7.12.5, 7.13.4, 8.0.2, 8.1.1, and 8.2.0, a NoSQL injection vulnerability exists in Rocket.Chat's account service used in the ddp-streamer micro service that allows unauthenticated attackers to manipulate MongoDB queries during authentication. The vulnerability is located in the username-based login flow where user-supplied input is directly embedded into a MongoDB query selector without validation.

An attacker can inject MongoDB operator expressions (e.g., { $regex: '.*' }) in place of a username string, causing the database query to match unintended user records. This issue has been patched in versions 7.10.8, 7.11.5, 7.12.5, 7.13.4, 8.0.2, 8.1.1, and 8.2.0.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 9

Configuration From (including) Up to (excluding)
Rocket.Chat Rocket.Chat
cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*
7.10.8
Rocket.Chat Rocket.Chat
cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*
7.11.0 7.11.5
Rocket.Chat Rocket.Chat
cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*
7.12.0 7.12.5
Rocket.Chat Rocket.Chat
cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*
7.13.0 7.13.4
Rocket.Chat Rocket.Chat
cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*
8.0.0 8.0.2
Rocket.Chat Rocket.Chat
cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*
8.1.0 8.1.1
Rocket.Chat Rocket.Chat
cpe:2.3:a:rocket.chat:rocket.chat:8.2.0:rc0:*:*:*:*:*:*
Rocket.Chat Rocket.Chat
cpe:2.3:a:rocket.chat:rocket.chat:8.2.0:rc1:*:*:*:*:*:*
Rocket.Chat Rocket.Chat
cpe:2.3:a:rocket.chat:rocket.chat:8.2.0:rc2:*:*:*:*:*:*