CVE-2026-13063

An authenticated user with standard read/write privileges can cause the mongod process to terminate due to an out-of-memory condition by sending a crafted aggregation command. MongoDB's libmongocrypt library insufficiently validates payload-supplied values, which can result in an excessively large memory allocation.

Score

CVSS 3.1 6.5 Medium

Status

Analyzed - cna@mongodb.com

Published

2026-07-22

Last modified

2026-10-24

Weaknesses

CWE-190

Affected products

• Mongodb (Mongodb)
• Mongodb Server (Mongodb)

References

• https://jira.mongodb.org/browse/SERVER-127737