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CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-18697

Improper Input Validation in MongoDB Aggregation Framework Allows Unauthenticated Denial of Service on mongos

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Status
Published
Published
Updated
Assigning organization
mongodb

Description

An issue in MongoDB Server's aggregation framework could allow an unauthenticated party to cause a mongos (router) process to terminate unexpectedly by submitting a specially formed aggregation command. This could result in a denial of service, disrupting client connections routed through the affected mongos instance.

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 < 8.3.8affected
  • 8.0 to < 8.0.29affected
  • 7.0 to < 7.0.40affected

References