CVE-2026-18694

Out-of-Bounds Read in MongoDB Geospatial Query Processing Leads to Denial of Service and Potential Memory Disclosure

State: Published
Severity: 7.1 High
Published: Aug 11, 2026
Updated: Aug 11, 2026
Reserved: Aug 3, 2026

Description

An issue in MongoDB Server's geospatial query processing could allow an authenticated user with write privileges to cause certain malformed geometry data to be stored and later processed without proper validation. Subsequent queries against this data could then result in the server accessing memory outside its intended bounds. This could result in a server crash (denial of service) and may expose a limited amount of server process memory.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N	mongodb
3.1	7.1 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H	mongodb

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
MongoDB ServerMongoDB	8.3.0 to before 8.3.8Affected 8.0 to before 8.0.29Affected 7.0 to before 7.0.40Affected

References

https://jira.mongodb.org/browse/SERVER-130188

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