MongoDB Server up to 7.0.28/8.0.17 Large Document Insert allocation of resources

Summaryinfo

A vulnerability was found in MongoDB Server up to 7.0.28/8.0.17. It has been declared as problematic. Affected is an unknown function of the component Large Document Insert. Such manipulation leads to allocation of resources. This vulnerability is traded as CVE-2026-1847. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in MongoDB Server up to 7.0.28/8.0.17 and classified as problematic. Affected by this issue is some unknown processing of the component Large Document Insert. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. CVE summarizes:

Inserting certain large documents into a replica set could lead to replica set secondaries not being able to fetch the oplog from the primary. This could stall replication inside the replica set leading to server crash.

The advisory is shared for download at jira.mongodb.org. This vulnerability is handled as CVE-2026-1847 since 02/03/2026. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

The vulnerability scanner Nessus provides a plugin with the ID 298783 (Linux Distros Unpatched Vulnerability : CVE-2026-1847), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 7.0.29 or 8.0.18 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (298783) and CERT Bund (WID-SEC-2026-0386). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

• Open Source MongoDB

Productinfo

Type

• Database Software

Vendor

• MongoDB

Name

• Server

Version

• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.0.6
• 7.0.7
• 7.0.8
• 7.0.9
• 7.0.10
• 7.0.11
• 7.0.12
• 7.0.13
• 7.0.14
• 7.0.15
• 7.0.16
• 7.0.17
• 7.0.18
• 7.0.19
• 7.0.20
• 7.0.21
• 7.0.22
• 7.0.23
• 7.0.24
• 7.0.25
• 7.0.26
• 7.0.27
• 7.0.28
• 8.0.0
• 8.0.1
• 8.0.2
• 8.0.3
• 8.0.4
• 8.0.5
• 8.0.6
• 8.0.7
• 8.0.8
• 8.0.9
• 8.0.10
• 8.0.11
• 8.0.12
• 8.0.13
• 8.0.14
• 8.0.15
• 8.0.16
• 8.0.17

License

• open-source

CPE 2.3info

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CPE 2.2info

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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