MongoDB Server up to 7.0.30/8.0.19/8.2.5 Aggregation lookup double free

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability was found in MongoDB Server up to 7.0.30/8.0.19/8.2.5. It has been declared as problematic. The affected element is an unknown function of the component Aggregation Handler. Such manipulation of the argument lookup leads to double free. This vulnerability is traded as CVE-2026-4358. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in MongoDB Server up to 7.0.30/8.0.19/8.2.5. Affected by this issue is some unknown processing of the component Aggregation Handler. The manipulation of the argument lookup with an unknown input leads to a double free vulnerability. Using CWE to declare the problem leads to CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A specially crafted aggregation query with $lookup by an authenticated user with write privileges can cause a double-free or use-after-free memory issue in the slot-based execution (SBE) engine when an in-memory hash table is spilled to disk.

The advisory is available at jira.mongodb.org. This vulnerability is handled as CVE-2026-4358 since 03/17/2026. The exploitation is known to be difficult. The attack may be launched remotely. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 303007 (Linux Distros Unpatched Vulnerability : CVE-2026-4358), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 7.0.31, 8.0.20 or 8.2.6 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (303007) and CERT Bund (WID-SEC-2026-0773). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Open Source MongoDB

Productinfo

Type

Vendor

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: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.4
CNA Vector (mongodb): 🔒

CVSSv2info

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

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
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: 303007
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-4358

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Server 7.0.31/8.0.20/8.2.6

Timelineinfo

03/17/2026 CVE reserved
03/18/2026 +1 days Advisory disclosed
03/18/2026 +0 days VulDB entry created
03/21/2026 +3 days VulDB entry last update

Sourcesinfo

Advisory: jira.mongodb.org
Status: Confirmed

CVE: CVE-2026-4358 (🔒)
GCVE (CVE): GCVE-0-2026-4358
GCVE (VulDB): GCVE-100-351434
CERT Bund: WID-SEC-2026-0773 - MongoDB: Mehrere Schwachstellen

Entryinfo

Created: 03/18/2026 02:48
Updated: 03/21/2026 22:11
Changes: 03/18/2026 02:48 (77), 03/18/2026 18:10 (7), 03/20/2026 01:20 (2), 03/21/2026 22:11 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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