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

CVE-2026-4358

Memory safety issues in slot-based execution hash table spill PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
MongoDB Inc / MongoDB Server	affected 8.2 before 8.2.6; affected 8.0 before 8.0.20; affected 7.0 before 7.0.31

CWE

CWE-415

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.