1. Home
  2. CVE Database
  3. CVE-2026-18687
HIGH · 7.1

CVE-2026-18687

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 aut...

Vulnerability 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.

CVSS Score

7.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
HIGH

Affected Products

VendorProductVersions
MongodbMongodb>= 8.0.0, < 8.0.29

Related Weaknesses (CWE)

CWE-191

References

FAQ

What is CVE-2026-18687?

CVE-2026-18687 is a vulnerability with a CVSS score of 7.1 (HIGH). 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 aut...

How severe is CVE-2026-18687?

CVE-2026-18687 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-18687?

Check the references section above for vendor advisories and patch information. Affected products include: Mongodb Mongodb.