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.
Published: 2026-03-17
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution via Use‑After‑Free
Action: Immediate Patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 10 Apr 2026 17:45:00 +0000

Type Values Removed Values Added
First Time appeared Mongodb mongodb
CPEs cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*
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:*:*:-:*:*:*
Vendors & Products Mongodb mongodb

Wed, 18 Mar 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Mongodb
Mongodb mongodb Server
Vendors & Products Mongodb
Mongodb mongodb Server

Tue, 17 Mar 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 17 Mar 2026 16:00:00 +0000

Type Values Removed Values Added
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.
Title ExpressionContext use-after-free in classic engine $lookup and $graphLookup aggregation operators
Weaknesses CWE-416
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, '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'}


Subscriptions

Mongodb Mongodb Mongodb Server
cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-03-18T03:55:44.426Z

Reserved: 2026-03-13T17:18:13.718Z

Link: CVE-2026-4148

cve-icon Vulnrichment

Updated: 2026-03-17T16:10:20.716Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-17T16:16:23.807

Modified: 2026-04-10T17:38:37.107

Link: CVE-2026-4148

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-13T14:28:26Z

Weaknesses