What’s Vulnerable › Vulnerabilities
CVE-2026-82054: Uncontrolled Resource Consumption in MongoDB Server JSON Pointer Parser Leads to Denial of Service
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-08 · updated 2026-09-16
- Weakness: CWE-770
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.
Affected products
- MongoDB: from 7.0.0 before 7.0.41; from 8.0.0 before 8.0.30; from 8.2.0 through 8.2.12; from 8.3.0 before 8.3.9; 9.0.0-alpha0, 9.0.0-alpha1, 9.1.0-alpha0 — fixed in 7.0.41, 8.0.30, 8.3.9
How to fix
Upgrade to a fixed version: MongoDB 7.0.41, 8.0.30, 8.3.9. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-82054 or the next vulnerability affects your stack