CVE-2026-4358CWE-415

Memory safety issues in slot-based execution hash table spill

Medium · published March 17, 2026

CVSS v4.0
6.1
EPSS
0%
Percentile
30.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.1 · MEDIUM
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
EPSS
0.00379 · 30.6th percentile
Weakness
CWE-415 · Double Free
Published
2026-03-17T19:00Z
EPSS history
Timeline
  • 17 MAR 19:00Z
    Memory safety issues in slot-based execution hash table spill
    cvelistv5