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CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-9740

Unbounded recursion in BSONColumn interleaved-reference causes pre-auth stack overflow

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Status
Published
Published
Updated
Assigning organization
mongodb

Description

A vulnerability in MongoDB Server's BSON validation logic allows an unauthenticated user to crash the mongod process by sending a specially crafted message. The BSON validator's handling of certain nested binary data structures permits uncontrolled mutual recursion between validation functions, where each re-entry resets internal depth tracking.

Affected products

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

MongoDB MongoDB Server

Default version status: unaffected

  • 8.3.0 to < 8.3.3affected
  • 8.2.0 to < 8.2.10affected
  • 8.0.0 to < 8.0.24affected
  • 7.0.0 to < 7.0.35affected

References