CVE-2026-82057

HIGH CVSS 4.0: 7.1 EPSS 0.42%
Updated Sep 16, 2026
MongoDB
Parameter Value
CVSS 7.1 (HIGH)
Affected Versions 8.3.0 — 8.3.9
Fixed In 8.3.9
Type CWE-843 (Type Confusion)
Vendor MongoDB
Public PoC No

A security issue was discovered in MongoDB where an authenticated user with readWrite privileges could crash the mongod server process. By specifying a custom WiredTiger storage configuration option with an incompatible value during collection creation, a user could cause a type confusion in the storage engine layer. When documents were subsequently read from the misconfigured collection, the resulting mismatch in expected data format led to corrupted memory interpretation and a server crash.

The crafted collection configuration persists across restarts, requiring manual operator intervention to remediate.

Attack Parameters

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

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Mongodb Mongodb
cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*
8.3.0 8.3.9