CVE-2026-18707— Improper Input Validation in MongoDB Aggregation Command Handling 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 Server是美国MongoDB公司开源的一款面向文档的数据库系统。 MongoDB Server 8.3.0至8.3.8之前版本存在异常处理不当漏洞，该漏洞源于提交特制的聚合命令，可能导致服务进程意外终止，造成拒绝服务。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1499 · Endpoint Denial of ServiceAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| MongoDB | MongoDB Server | 8.3.0< 8.3.8 |
affected |
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-18707
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Improper Input Validation in MongoDB Aggregation Command Handling Leads to Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
An issue in MongoDB Server could allow an authenticated user, including one with no assigned privileges, to cause the server process to terminate unexpectedly by submitting a specially formed aggregation command. This could result in a denial of service.
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:L
Source: CVE Program / CVE List V5
Vulnerability Type
可达断言
Source: CVE Program / CVE List V5
Vulnerability Title
MongoDB Server 异常处理不当漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MongoDB Server是美国MongoDB公司开源的一款面向文档的数据库系统。 MongoDB Server 8.3.0至8.3.8之前版本存在异常处理不当漏洞，该漏洞源于提交特制的聚合命令，可能导致服务进程意外终止，造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| MongoDB | MongoDB Server | 8.3.0 ~ 8.3.8 | - |
|
II. Public POCs for CVE-2026-18707
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-18707
请登录查看更多情报信息。
Patches & Fixes for CVE-2026-18707 (1)
Same Patch Batch · MongoDB · 2026-08-11 · 25 CVEs total
| CVE-2026-18691 | 8.8 HIGH | Improper Authentication in MongoDB Intra-Cluster Connections Allows Credential Exposure |
| CVE-2026-18692 | 8.8 HIGH | Use-After-Free in MongoDB Timeseries Bucket Handling Leads to Denial of Service and Potent |
| CVE-2026-18712 | 8.1 HIGH | Improper Authorization in MongoDB Queryable Encryption Maintenance Operations Allows Unaut |
| CVE-2026-18690 | 8.1 HIGH | Improper Authorization in MongoDB Server Allows Unauthorized Actions on System Collections |
| CVE-2026-18693 | 7.6 HIGH | Out-of-Bounds Read/Write in MongoDB Timeseries Bucket Handling Leads to Denial of Service |
| CVE-2026-18697 | 7.5 HIGH | Improper Input Validation in MongoDB Aggregation Framework Allows Unauthenticated Denial o |
| CVE-2026-18694 | 7.1 HIGH | Out-of-Bounds Read in MongoDB Geospatial Query Processing Leads to Denial of Service and P |
| CVE-2026-18711 | 7.1 HIGH | Use-After-Free in MongoDB Query Execution Engine Leads to Denial of Service and Potential |
| CVE-2026-18688 | 7.1 HIGH | Out-of-Bounds Read in MongoDB Aggregation Framework Leads to Denial of Service and Potenti |
| CVE-2026-18687 | 7.1 HIGH | Improper Validation in MongoDB Queryable Encryption Maintenance Operation Leads to Denial |
| CVE-2026-18706 | 6.6 MEDIUM | Use-After-Free in MongoDB $graphLookup Aggregation Stage Leads to Denial of Service and Po |
| CVE-2026-18705 | 6.5 MEDIUM | Improper Authorization in MongoDB Atlas Vector Search Allows Unauthorized Access to Protec |
| CVE-2026-18710 | 6.5 MEDIUM | Cleartext Storage of Sensitive Information in MongoDB Driver Logging During Client Initial |
| CVE-2026-18699 | 6.5 MEDIUM | Improper Input Validation in MongoDB Query Planner Leads to Denial of Service |
| CVE-2026-18696 | 6.5 MEDIUM | Improper Authorization in MongoDB applyOps Command Handling Allows Unauthorized DDL Operat |
| CVE-2026-18701 | 6.5 MEDIUM | Type Confusion in MongoDB Query Subsystem Leads to Denial of Service |
| CVE-2026-18704 | 6.5 MEDIUM | Improper Authorization in MongoDB Aggregation Framework Allows Read-Only User to Perform U |
| CVE-2026-18700 | 6.5 MEDIUM | Use-After-Free in MongoDB Geospatial Validation Leads to Denial of Service |
| CVE-2026-18695 | 6.5 MEDIUM | Improper Input Validation in MongoDB Timeseries Query Processing Leads to Denial of Servic |
| CVE-2026-18709 | 6.4 MEDIUM | Missing Authorization in MongoDB Sharded Transaction Commit/Abort Handling Leads to Cross- |
Showing top 20 of 25 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: MongoDB Server
-
CVE-2026-89099
Race Condition in MongoDB Server Document Value Layer Leads -
CVE-2026-82076
Integer Overflow in Query Planner Leads to Unbounded Memory -
CVE-2026-82075
Uncontrolled Resource Consumption in MongoDB Sharded Cluster -
CVE-2026-82074
Incorrect Authorization in MongoDB Server Aggregation Framew -
CVE-2026-82071
Insufficient Validation of Storage Engine Configuration Opti
Same vendor: MongoDB
-
CVE-2026-96749
Heap out-of-bounds write via signed size overflow in BSON do -
CVE-2026-96748
Connection redirection via percent-encoded delimiter injecti -
CVE-2026-96747
Forced local Unix socket connection via dot-sock KMS endpoin -
CVE-2026-96745
PHP object injection via unsuppressible __pclass class infer -
CVE-2026-96746
Heap buffer overflow via mid-scan command list growth in cli
Same weakness: CWE-617
V. Comments for CVE-2026-18707
No comments yet