---
id: CVE-2026-82057
title: >-
  A security issue was discovered in MongoDB where an authenticated user with
  readWrite privileges could crash the mongod server process
summary: >-
  A security issue was discovered in MongoDB where an authenticated user with
  readWrite privileges could crash the mongod server process. By specifying a
  custom WiredTiger storage configuration option with an incompatible value
  during coll…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-843
vendor: mongodb
product: mongodb
affected:
  - 'mongodb >= 8.3.0, < 8.3.9'
patched:
  - mongodb 8.3.9
published: '2026-09-08'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T20:33:52.627'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82057'
references:
  - url: 'https://jira.mongodb.org/browse/SERVER-130495'
    label: cna@mongodb.com
tags:
  - nvd
  - cve.org
epss: 0.0042
epssPercentile: 0.33591
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-08T18:00:30.816044Z'
ingestedAt: '2026-09-08T16:34:19.257Z'
---

## Overview

A security issue was discovered in MongoDB where an authenticated user with readWrite privileges could crash the mongod server process. By specifying a custom WiredTiger storage configuration option with an incompatible value during collection creation, a user could cause a type confusion in the storage engine layer. When documents were subsequently read from the misconfigured collection, the resulting mismatch in expected data format led to corrupted memory interpretation and a server crash. The crafted collection configuration persists across restarts, requiring manual operator intervention to remediate.

## Affected

- `mongodb >= 8.3.0, < 8.3.9`

## Remediation

Upgrade past the affected range:

- `mongodb 8.3.9`