CVE-2026-18687 (GCVE-0-2026-18687)
Vulnerability from cvelistv5 – Published: 2026-08-11 18:35 – Updated: 2026-08-11 20:27
VLAI
EPSS
VEX
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
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
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB | MongoDB Server |
Affected:
8.3.0 , < 8.3.8
(semver)
Affected: 8.0 , < 8.0.29 (semver) |
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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