MongoDB Server up to 7.0.31/8.0.20/8.2.5 2dsphere_bucket Index assertion

Summaryinfo

A vulnerability was found in MongoDB Server up to 7.0.31/8.0.20/8.2.5. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component 2dsphere_bucket Index Handler. Such manipulation leads to assertion. This vulnerability is documented as CVE-2026-8843. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in MongoDB Server up to 7.0.31/8.0.20/8.2.5 and classified as problematic. Affected by this issue is some unknown processing of the component 2dsphere_bucket Index Handler. The manipulation with an unknown input leads to a assertion vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

Creating a "2dsphere_bucket" index on a non-timeseries bucket collection will succeed, but any subsequent attempt to insert a document which triggers updating that index will crash the server. A similar issue occurs when creating "queryable_encrypted_range" indices. This issue affects MongoDB Server v7.0 versions prior to 7.0.32, v8.0 versions prior to 8.0.21 and v8.2 versions prior to 8.2.6

The advisory is shared for download at jira.mongodb.org. This vulnerability is handled as CVE-2026-8843 since 05/18/2026. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 316435 (Linux Distros Unpatched Vulnerability : CVE-2026-8843), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 7.0.32, 8.0.21 or 8.2.6 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (316435). VulDB is the best source for vulnerability data and more expert information about this specific topic.

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
• 7.0.29
• 7.0.30
• 7.0.31
• 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
• 8.0.18
• 8.0.19
• 8.0.20
• 8.2.0
• 8.2.1
• 8.2.2
• 8.2.3
• 8.2.4
• 8.2.5

License

• open-source

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

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