MongoDB up to 8.3.7 Aggregation assertion

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in MongoDB up to 8.3.7. The impacted element is an unknown function of the component Aggregation. The manipulation results in input validation. This vulnerability was named CVE-2026-18707. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in MongoDB up to 8.3.7. It has been classified as problematic. Affected is an unknown code block of the component Aggregation. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-617. The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at jira.mongodb.org. This vulnerability is traded as CVE-2026-18707 since 08/03/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 343459 (Linux Distros Unpatched Vulnerability : CVE-2026-18707), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 8.3.8 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (343459). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 4.3
CNA Vector (mongodb): 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Assertion
CWE: CWE-617
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 343459
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-18707

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: MongoDB 8.3.8

Timelineinfo

08/03/2026 CVE reserved
08/11/2026 +8 days Advisory disclosed
08/11/2026 +0 days VulDB entry created
09/17/2026 +37 days VulDB entry last update

Sourcesinfo

Advisory: jira.mongodb.org
Status: Confirmed

CVE: CVE-2026-18707 (🔒)
GCVE (CVE): GCVE-0-2026-18707
GCVE (VulDB): GCVE-100-388428

Entryinfo

Created: 08/11/2026 21:10
Updated: 09/17/2026 05:49
Changes: 08/11/2026 21:10 (54), 09/08/2026 02:59 (2), 09/17/2026 05:49 (24)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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