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TI-2018-14773 Aliases CVE-2018-20802GHSA-g6mr-mvf4-4wvj

Post-auth queries on compound index may crash mongod

Priority LOW 32CWE-394Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries with compound indexes affecting QueryPlanner. This issue affects MongoDB Server v3.6 versions prior to 3.6.9 and MongoDB Server v4.0 versions prior to 4.0.3.

Why it matters now

EPSS 0.01584 75th percentileScored 2026-11-07
Fix Partial MongoDB Server (MongoDB Inc.): 3.6.9, 4.0.3Red Hat: 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MongoDBMongoDB Server3.6 to before 3.6.9; 4.0 to before 4.0.33.6.9, 4.0.3Patch availableCNA
  • MongoDB Server VendorMongoDB Affected 3.6 to before 3.6.9; 4.0 to before 4.0.3 Fixed in 3.6.9, 4.0.3 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*3.6.0 to before 3.6.9; 4.0.0 to before 4.0.3VulnerableMongoDB
  • cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* Versions 3.6.0 to before 3.6.9; 4.0.0 to before 4.0.3 Vulnerable ·MongoDB

Remediation

  • Fix · CNA MongoDB Server (MongoDB Inc.) Fixed in 3.6.9, 4.0.3

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenStack Platform 10 (Newton)AffectedNo fix planned: Out of support scope
Red Hat Software CollectionsAffectedNo fix planned: Will not fix
Not affected: 2 products
  • Red Hat Advanced Cluster Management for Kubernetes 2
  • Red Hat Update Infrastructure 3 for Cloud Providers

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-20802
  2. 2026-10-03 Alias added: GHSA-g6mr-mvf4-4wvj

References

Advisory 1

  • TI-2025-13542 Zlib compressed protocol header length confusion may allow memory read KEVCVSS 4.0HIGH 8.7
  • TI-2013-01669 MongoDB before 2.0.9 and 2.2.x before 2.2.4 does not properly validate requests to the… CVSS 2.0MEDIUM 6.0
  • TI-2026-56639 Uncontrolled Resource Consumption in MongoDB Sharded Cluster Router Allows Unauthenticated Denial of Service CVSS 4.0HIGH 8.7
  • TI-2026-56628 Reachable assertion in MongoDB Server CVSS 4.0HIGH 8.7
  • TI-2026-15322 Improper Input Validation in MongoDB Aggregation Framework Allows Unauthenticated Denial of Service on mongos CVSS 4.0HIGH 8.7
  • TI-2026-08537 Unbounded recursion in BSONColumn interleaved-reference causes pre-auth stack overflow CVSS 4.0HIGH 8.7
See all 187 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences