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CVE-2026-73618— Budibase Server before 3.40.0 NoSQL Injection via JSON Parameter

Quick assessment

Affected
budibase server
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Budibase是英国Budibase公司开源的一款低代码应用构建平台。 Budibase 3.40.0之前版本存在输入验证错误漏洞，该漏洞源于MongoDB查询执行端点中用户提供的参数被插入JSON查询模板且未正确清理JSON元字符，容易受到非关系型数据库注入攻击，可能导致具有查询写入权限的攻击者注入JSON结构字符篡改MongoDB查询，绕过过滤器读取、修改或删除任意文档。

CVSS 8.3 · High EPSS 0.51% · P41

Affected Version Matrix 2

VendorProduct Version RangeStatus
budibase server < 3.40.0 affected
3.40.0 unaffected
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I. Basic Information for CVE-2026-73618

Vulnerability Information
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Vulnerability Title
Budibase Server before 3.40.0 NoSQL Injection via JSON Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
数据查询逻辑中特殊元素的不当中和
Source: CVE Program / CVE List V5
Vulnerability Title
Budibase 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Budibase是英国Budibase公司开源的一款低代码应用构建平台。 Budibase 3.40.0之前版本存在输入验证错误漏洞，该漏洞源于MongoDB查询执行端点中用户提供的参数被插入JSON查询模板且未正确清理JSON元字符，容易受到非关系型数据库注入攻击，可能导致具有查询写入权限的攻击者注入JSON结构字符篡改MongoDB查询，绕过过滤器读取、修改或删除任意文档。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
budibase server 0 ~ 3.40.0 -

II. Public POCs for CVE-2026-73618

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 6567 chars
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III. Intelligence Information for CVE-2026-73618

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Vendor Advisories for CVE-2026-73618 (2)

Same Patch Batch · budibase · 2026-08-13 · 13 CVEs total

CVE-2026-72851 10.0 CRITICAL Budibase before 3.40.0 SQL Injection via Unauthenticated Webhook
CVE-2026-72850 9.1 CRITICAL Budibase before 3.40.0 Arbitrary File Write via Path Traversal
CVE-2026-73302 9.0 CRITICAL Budibase: OIDC SSO account takeover: incoming identity linked by email without checking em
CVE-2026-73305 8.8 HIGH Budibase: Privilege escalation via public role assignment API missing app-level authorizat
CVE-2026-72855 8.5 HIGH Budibase before 3.40.0 DNS Rebinding SSRF via OpenAPI and REST
CVE-2026-72856 8.1 HIGH Budibase before 3.40.0 Authentication Bypass via Tenant Owner Email
CVE-2026-72857 7.7 HIGH Budibase before 3.40.0 Credential Exposure via STRING Fields
CVE-2026-72849 7.7 HIGH Budibase before 3.40.0 Identity Confusion via Chat-Link Handoff CSRF
CVE-2026-72853 7.6 HIGH Budibase before 3.40.0 SQL Injection via Oracle connector
CVE-2026-73408 7.6 HIGH Budibase: MySQL DESCRIBE Backtick Injection via multipleStatements in Database Connector
CVE-2026-73617 7.1 HIGH Budibase before 3.40.0 NoSQL Injection via MongoDB datasource
CVE-2026-73304 4.9 MEDIUM Budibase: SSO OAuth2 Token Leakage via User Metadata Endpoints to Power-Role Users

IV. Related Vulnerabilities

Same product: server
Same vendor: budibase
Same weakness: CWE-943

V. Comments for CVE-2026-73618

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