CVE-2026-18687 (GCVE-0-2026-18687)

Vulnerability from cvelistv5 – Published: 2026-08-11 18:35 – Updated: 2026-08-11 20:27
VLAI
Title
Improper Validation in MongoDB Queryable Encryption Maintenance Operation Leads to Denial of Service and Index Corruption
Summary
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.
Severity
7.1 (High)
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
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 20:27 UTC
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
mongodb CNA under the mitre root
CNA scorecard C 70/100 over 222 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
MongoDB MongoDB Server Affected: 8.3.0 , < 8.3.8 (semver)
Affected: 8.0 , < 8.0.29 (semver)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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