CVE-2026-82076

Integer Overflow in Query Planner Leads to Unbounded Memory Allocation and Denial of Service in MongoDB Server

MEDIUM
6.5
CVSS Score
Published: September 8, 2026 at 04:12 PM UTC
Updated: September 14, 2026 at 05:44 PM UTC
1 product affected across 1 vendorMongoDB

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

7.0.0 ≤ v < 7.0.418.0.0 ≤ v < 8.0.308.2.0 ≤ v < 8.2.138.3.0 ≤ v < 8.3.97.0.08.0.08.3.09.0.0 alpha09.0.0 alpha1
Affected range stops below 7.0.41, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.0.30, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.2.13, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.3.9, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

Vendor AdvisoryIssue Tracking
Source: cverecord
https://jira.mongodb.org/browse/SERVER-128253

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMmongodb
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-190

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