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CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-4148

ExpressionContext use-after-free in classic engine $lookup and $graphLookup aggregation operators

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Status
Published
Published
Updated
Assigning organization
mongodb

Description

A use-after-free vulnerability can be triggered in sharded clusters by an authenticated user with the read role who issues a specially crafted $lookup or $graphLookup aggregation pipeline.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

MongoDB Inc MongoDB Server

Default version status: unaffected

  • 8.2 to < 8.2.6affected
  • 8.0 to < 8.0.20affected
  • 7.0 to < 7.0.31affected

References