What’s Vulnerable › Vulnerabilities
CVE-2026-82076: Integer Overflow in Query Planner Leads to Unbounded Memory Allocation and Denial of Service in MongoDB Server
- 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 2026-09-14
- Weakness: CWE-190
Description
An integer overflow in the query planning component of MongoDB Server can allow an authenticated user with ordinary database-level read/write privileges to bypass an internal resource limit. Submitting a specially crafted query causes the server to consume memory without bound during query planning, and the resulting exhaustion terminates the server process. This may result in a denial of service affecting all databases served by the affected node.
Affected products
- MongoDB: from 7.0.0 before 7.0.41; from 8.0.0 before 8.0.30; from 8.2.0 before 8.2.13; from 8.3.0 before 8.3.9; 9.0.0-alpha0, 9.0.0-alpha1 — fixed in 7.0.41, 8.0.30, 8.2.13, 8.3.9
How to fix
Upgrade to a fixed version: MongoDB 7.0.41, 8.0.30, 8.2.13, 8.3.9. Check the vendor advisory for mitigations.
References
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