CVE-2026-82052

HIGH CVSS 4.0: 7.1 EPSS 0.50%
Updated Sep 16, 2026
MongoDB
Parameter Value
CVSS 7.1 (HIGH)
Affected Versions 7.0.0 — 8.3.9
Fixed In 7.0.41
Type CWE-617
Vendor MongoDB
Public PoC No

The $regexFindAll expression can be used by an authenticated user who can run aggregation pipeline stages to crash a MongoDB server (mongod). Under certain specific conditions the  regex match can start in the middle of a multi-code-unit character, triggering an assertion during query execution.

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 3

Configuration From (including) Up to (excluding)
Mongodb Mongodb
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*
7.0.0 7.0.41
Mongodb Mongodb
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*
8.0.0 8.0.30
Mongodb Mongodb
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*
8.3.0 8.3.9