CVE-2026-4358

| EUVD-2026-12639 MEDIUM
2026-03-17 mongodb
6.1
CVSS 4.0
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CVSS Vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
Patch Released
Mar 31, 2026 - 21:13 nvd
Patch available
Analysis Generated
Mar 17, 2026 - 20:30 vuln.today
EUVD ID Assigned
Mar 17, 2026 - 20:30 euvd
EUVD-2026-12639
CVE Published
Mar 17, 2026 - 19:00 nvd
MEDIUM 6.1

Tags

Information Disclosure

Description

A specially crafted aggregation query with $lookup by an authenticated user with write privileges can cause a double-free or use-after-free memory issue in the slot-based execution (SBE) engine when an in-memory hash table is spilled to disk.

Analysis

Memory corruption in MongoDB Server's slot-based execution engine can be triggered by authenticated users with write privileges through malicious $lookup aggregation queries that cause hash table spillover to disk. Successful exploitation enables denial of service and potential information disclosure, though a patch is not currently available. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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Priority Score

31
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +30
POC: 0

Vendor Status

Debian

mongodb
Release Status Fixed Version Urgency
(unstable) fixed (unfixed) -

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CVE-2026-4358 vulnerability details – vuln.today
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