CVE-2026-4358

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.

Score

CVSS 3.1 7.5 High

Status

Analyzed - cna@mongodb.com

Published

2026-03-17

Last modified

2026-03-17

Weaknesses

CWE-415

Affected products

• Mongodb (Mongodb)
• Mongodb Server (Mongodb Inc)

References

• https://jira.mongodb.org/browse/SERVER-118849