Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-82058— Unhandled Exception in MongoDB Server JSON Schema Validation Error Generation Leads to Denial of Service

Quick assessment

Affected
MongoDB MongoDB Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MongoDB 的 JSON Schema 验证错误生成代码中存在一个缺陷，允许拥有读写权限的认证用户使 mongod 服务器崩溃。 具体场景是：当一个 BSON 文档中包含一个数组，且该数组中某个数值型字段名格式错误，并违反了 的 items 类型约束时，错误生成路径会对用户可控的字段名执行不安全的数值转换，且缺乏适当的异常处理，导致抛出未被捕获的异常，从而终止服务器进程。 之所以会出现这种情况，是因为入站的 wire 协议 BSON 验证并未强制要求数组元素的字段名必须是有效、在范围内的数值型索引。

CVSS 6.5 · Medium

Affected Version Matrix 3

VendorProduct Version RangeStatus
MongoDB MongoDB Server 8.3.0< 8.3.9 affected
8.0.0< 8.0.30 affected
7.0.0< 7.0.41 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-82058

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Unhandled Exception in MongoDB Server JSON Schema Validation Error Generation Leads to Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw in MongoDB's JSON Schema validation error generation code allows an authenticated user with readWrite privileges to crash the mongod server. When a BSON document containing an array with a malformed numeric field name fails a $jsonSchema items type constraint, the error generation path performs unsafe numeric conversion on the user-controlled field name without proper exception handling, resulting in an uncaught exception that terminates the server process. This is possible because incoming wire protocol BSON validation does not enforce that array element field names are valid, in-range numeric indices.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未捕获的异常
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
MongoDB MongoDB Server 8.3.0 ~ 8.3.9 -

II. Public POCs for CVE-2026-82058

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-82058

请登录查看更多情报信息。

Other References for CVE-2026-82058 (1)

Same Patch Batch · MongoDB · 2026-09-08 · 24 CVEs total

CVE-2026-82061 8.1 HIGH Use-After-Free in MongoDB Server Query Execution Memory Tracking Subsystem Leads to Denial
CVE-2026-82071 8.1 HIGH Insufficient Validation of Storage Engine Configuration Options in MongoDB Server Leads to
CVE-2026-82053 8.1 HIGH Improper Session Handling in MongoDB Server LDAP Authorization Integration Leads to Incorr
CVE-2026-82067 8.1 HIGH Improper Case Sensitivity Handling in MongoDB Server Configuration Validation May Cause Au
CVE-2026-82075 7.5 HIGH Uncontrolled Resource Consumption in MongoDB Sharded Cluster Router Allows Unauthenticated
CVE-2026-82064 7.5 HIGH Unauthenticated Denial of Service in MongoDB Server via Assertion Failure in Read Concern
CVE-2026-82070 6.5 MEDIUM Insufficiently Protected Credentials in MongoDB Server Diagnostic Reporting Interface
CVE-2026-82076 6.5 MEDIUM Integer Overflow in Query Planner Leads to Unbounded Memory Allocation and Denial of Servi
CVE-2026-82065 6.5 MEDIUM Insufficient Validation of Storage Configuration Options in MongoDB Server Leads to Persis
CVE-2026-82054 6.5 MEDIUM Uncontrolled Resource Consumption in MongoDB Server JSON Pointer Parser Leads to Denial of
CVE-2026-82055 6.5 MEDIUM Null Pointer Dereference in MongoDB Server 2dsphere Index Key Generation Leads to Denial o
CVE-2026-82057 6.5 MEDIUM Type Confusion in MongoDB Server WiredTiger Storage Engine via Custom Collection Configura
CVE-2026-82074 6.5 MEDIUM Incorrect Authorization in MongoDB Server Aggregation Framework Allows Unauthorized Read A
CVE-2026-82068 6.5 MEDIUM Persistent Fatal Assertion Crash in MongoDB Server via Crafted Retryable Write Commands Le
CVE-2026-82052 6.5 MEDIUM $regexFindAll may crash mongod server when byte-matching multi-byte UTF-8 chars
CVE-2026-82073 6.5 MEDIUM Improper Validation in MongoDB Server Aggregation Framework Allows Authorization Bypass an
CVE-2026-82062 5.5 MEDIUM Improper Authorization in MongoDB Server applyOps Command Allows Writes to Arbitrary Inter
CVE-2026-82060 5.4 MEDIUM Insufficient Validation of Shard Key Values in MongoDB Server Leads to Query Operator Inje
CVE-2026-82063 5.3 MEDIUM Use-After-Free in MongoDB Server Cursor Management Component Leads to Denial of Service
CVE-2026-82056 5.3 MEDIUM Race Condition in MongoDB Server Text Index Query Parsing Leads to Heap Use-After-Free and

Showing top 20 of 24 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: MongoDB Server
Same vendor: MongoDB
Same weakness: CWE-248

V. Comments for CVE-2026-82058

No comments yet

Leave a comment