CVE-2026-4148

Severity CVSS v4.0:

HIGH

Type:

CWE-416 Use After Free

Publication date:

17/03/2026

Last modified:

10/04/2026

Description

A use-after-free vulnerability can be triggered in sharded clusters by an authenticated user with the read role who issues a specially crafted $lookup or $graphLookup aggregation pipeline.

Impact

Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS v4.0 Severity and Metrics:

Base Score: 8.70 HIGH
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): Low
User Interaction (UI): None
Confidentiality (VC): High
Integrity (VI): High
Availability (VA): High
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None

Base Score 4.0

8.70

Severity 4.0

HIGH

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.80 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

8.80

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:mongodb:mongodb:::::-:::*	7.0.0 (including)	7.0.31 (excluding)
cpe:2.3:a:mongodb:mongodb:::::-:::*	8.0.0 (including)	8.0.20 (excluding)
cpe:2.3:a:mongodb:mongodb:::::-:::*	8.2.0 (including)	8.2.6 (excluding)
cpe:2.3:a:mongodb:mongodb:8.3.0:alpha0:::-:::*
cpe:2.3:a:mongodb:mongodb:8.3.0:alpha1:::-:::*
cpe:2.3:a:mongodb:mongodb:8.3.0:alpha2:::-:::*
cpe:2.3:a:mongodb:mongodb:8.3.0:alpha3:::-:::*
cpe:2.3:a:mongodb:mongodb:8.3.0:rc1:::-:::*

To consult the complete list of CPE names with products and versions, see this page

References to Advisories, Solutions, and Tools

https://jira.mongodb.org/browse/SERVER-119319