Resource exhaustion in MongoDB Server

CVE-2026-82054

A security issue exists in MongoDB server's JSON Pointer parser used during $jsonSchema query filter processing. When a find command includes a specially crafted $jsonSchema filter field, the parser processes the input without enforcing adequate limits on iteration count or total allocation size, resulting in significant memory amplification. Under concurrent request load, the cumulative memory consumption can exhaust available heap memory, causing the server's out-of-memory handler to terminate the mongod process and deny service to all connected clients.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-82054?
CVE-2026-82054 is a medium-severity vulnerability in MongoDB Server, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-09-08.
How severe is CVE-2026-82054?
Medium severity. CVSS v3 base score is 6.5 out of 10.