Budibase Server up to 3.39.x MongoDB Query Execution Endpoint data query logic injection

Summaryinfo

A vulnerability identified as critical has been detected in Budibase Server up to 3.39.x. Impacted is an unknown function of the component MongoDB Query Execution Endpoint. The manipulation leads to data query logic injection. This vulnerability is referenced as CVE-2026-73618. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Budibase Server up to 3.39.x. This issue affects some unknown functionality of the component MongoDB Query Execution Endpoint. The manipulation with an unknown input leads to a data query logic injection vulnerability. Using CWE to declare the problem leads to CWE-943. The product generates a query intended to access or manipulate data in a data store such as a database, but it does not neutralize or incorrectly neutralizes special elements that can modify the intended logic of the query. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Budibase Server before 3.40.0 contains a NoSQL injection vulnerability in the MongoDB query execution endpoint where user-supplied parameters are interpolated into JSON query templates without proper sanitization of JSON metacharacters. Attackers with query write permission can inject JSON structural characters to alter MongoDB queries, bypassing filters to read, modify, or delete arbitrary documents.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-73618 since 08/13/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available.

Upgrading to version 3.40.0 eliminates this vulnerability.

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Productinfo

Vendor

• Budibase

Name

• Server

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13
• 3.14
• 3.15
• 3.16
• 3.17
• 3.18
• 3.19
• 3.20
• 3.21
• 3.22
• 3.23
• 3.24
• 3.25
• 3.26
• 3.27
• 3.28
• 3.29
• 3.30
• 3.31
• 3.32
• 3.33
• 3.34
• 3.35
• 3.36
• 3.37
• 3.38
• 3.39

CPE 2.3info

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CPE 2.2info

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