CVE-2026-18697 — Improper Input Validation in MongoDB Aggregation Framework Allows Unauthenticated Denial of Service on mongos

CVE-2026-18697

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

Description (CNA)

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 (CNA)

Vendor / product	Versions
MongoDB / MongoDB Server	affected 8.3.0 before 8.3.8; affected 8.0 before 8.0.29; affected 7.0 before 7.0.40

CWE

CWE-617

References

https://jira.mongodb.org/browse/SERVER-130110

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.