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TI-2021-03614 Aliases CVE-2021-20326GHSA-vqmx-64jh-5r2h

Specially crafted query may result in a denial of service of mongod

Priority LOW 31CWE-20Published · 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: 1 without a fix

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

Summary

A user authorized to performing a specific type of find query may trigger a denial of service. This issue affects MongoDB Server v4.4 versions prior to 4.4.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00948 61st percentileScored 2026-11-07
Fix Partial MongoDB Server (MongoDB Inc.): 4.4.4Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MongoDBMongoDB Server4.4 to before 4.4.44.4.4Patch availableCNA
  • MongoDB Server VendorMongoDB Affected 4.4 to before 4.4.4 Fixed in 4.4.4 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*4.4.0 to before 4.4.4VulnerableMongoDB
  • cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* Versions 4.4.0 to before 4.4.4 Vulnerable ·MongoDB

Remediation

  • Fix · CNA MongoDB Server (MongoDB Inc.) Fixed in 4.4.4

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
Not affected: 3 products
  • Red Hat Advanced Cluster Management for Kubernetes 2
  • Red Hat Software Collections
  • Red Hat Update Infrastructure 3 for Cloud Providers

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-20326
  2. 2026-10-03 Alias added: GHSA-vqmx-64jh-5r2h

References

Patch 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