CVE-2026-4358 MEDIUM

CVE-2026-4358: Memory safety issues in slot-based execution hash table spill

Vendor Mongodb Inc
Product MongoDB Server
Weakness CWE-415
Published March 17, 2026
Last update March 17, 2026
View on NVD All CVEs

CVSS base score

6.1/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality —
Integrity —

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 17, 2026 CVE published
March 17, 2026 Record updated