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CVE-2026-18699: CWE-476: NULL Pointer Dereference in MongoDB MongoDB Server

0
Medium
VulnerabilityCVE-2026-18699cvecve-2026-18699cwe-476
Published: 08/11/2026 (08/11/2026, 18:46:35 UTC)
Source: CVE Database V5
Vendor/Project: MongoDB
Product: MongoDB Server

Description

An issue in MongoDB Server's query planner could allow an authenticated user with read-level privileges to cause the server process to terminate unexpectedly by submitting a specially formed query against a collection with a text index. This could result in a denial of service, affecting connected clients and in-flight operations.

CVSS v4.0

Score 6.0medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
None
Vuln. Integrity
None
Vuln. Availability
High
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected software

GitHub Actionsmore threats →ai
mongodb/mongo
pkg:github/mongodb/mongo
Affected versions
=7.0=8.0=8.3.0

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/11/2026, 19:27:55 UTC

Technical Analysis

This vulnerability (CWE-476: NULL Pointer Dereference) exists in the query planner component of MongoDB Server. An authenticated user with read privileges can exploit this flaw by sending a specially formed query targeting a collection with a text index. The flaw causes the server process to crash, resulting in a denial of service condition. The affected versions explicitly include MongoDB Server versions 7.0, 8.0, and 8.3.0. There is no vendor advisory or patch information provided, and no known exploits in the wild have been reported.

Potential Impact

Successful exploitation causes the MongoDB Server process to terminate unexpectedly, resulting in denial of service. This affects all connected clients and any in-flight operations, potentially disrupting availability of the database service. The impact is limited to denial of service; no information indicates data corruption or privilege escalation.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider restricting read-level access to trusted users and monitor for unusual query patterns targeting text indexes. No official fix or workaround has been documented at this time.

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Technical Details

Data Version
5.2
Assigner Short Name
mongodb
Date Reserved
2026-08-03T15:53:36.628Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a7b7422bf8831d539467f87

Added to database: 08/11/2026, 19:12:34 UTC

Last enriched: 08/11/2026, 19:27:55 UTC

Last updated: 08/11/2026, 22:59:39 UTC

Views: 6

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