CVE-2026-82054

Medium

Description

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.

SeverityMedium
CVSS6.5
Exploit probability—
ProductMongodb
PublishedSep 8, 2026
First seenSep 8, 2026

How to fix

Update
  • mongodb mongodb7.0.41, 8.0.30, 8.3.9 or later

Affected products

ProductAffected versionsFixed in
mongodb mongodb7.0.0 ≤ v < 7.0.41, 8.0.0 ≤ v < 8.0.30, 8.2.0 ≤ v ≤ 8.2.12, 8.3.0 ≤ v < 8.3.9, 9.0.0, 9.1.07.0.41, 8.0.30, 8.3.9

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CVE-2026-82054 · Mongodb · Dark Radar