Findings

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-ba…

Published Mar 17, 2026 · updated Jun 17, 2026 · mongodb mongodb

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.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 17, 2026 · NIST NVD

    Detected

    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.

  2. Jun 17, 2026 · NIST NVD

    Updated

    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

  • cpe mongodb/mongodbversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-4358

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-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.

    nvd.nist.gov

References

CVE-2026-4358 · ZeroDay Findings