Description
MongoDB Server's handling of a Queryable Encryption maintenance operation did not properly validate certain request parameters against the collection's encrypted field configuration before use. An authenticated user with readWrite privileges could submit a specially formed request that leads to a server crash or excessive internal writes, resulting in resource exhaustion and corruption of encrypted index data.
Published: 2026-08-11
Score: 7.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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Remediation

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History

Tue, 11 Aug 2026 18:45:00 +0000

Type Values Removed Values Added
Description MongoDB Server's handling of a Queryable Encryption maintenance operation did not properly validate certain request parameters against the collection's encrypted field configuration before use. An authenticated user with readWrite privileges could submit a specially formed request that leads to a server crash or excessive internal writes, resulting in resource exhaustion and corruption of encrypted index data.
Title Improper Validation in MongoDB Queryable Encryption Maintenance Operation Leads to Denial of Service and Index Corruption
Weaknesses CWE-191
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-08-11T18:35:14.950Z

Reserved: 2026-08-03T15:52:40.368Z

Link: CVE-2026-18687

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-11T19:17:22.467

Modified: 2026-08-11T19:17:22.467

Link: CVE-2026-18687

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses
  • CWE-191

    Integer Underflow (Wrap or Wraparound)