4.9

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2026-24766

CVE-2026-24766: NocoDB Vulnerable to Prototype Pollution in Connection Test Endpoint, Leading to DoS

NocoDB is software for building databases as spreadsheets. Prior to version 0.301.0, an authenticated user with org-level-creator permissions can exploit prototype pollution in the /api/v2/meta/connection/test endpoint, causing all database write operations to fail application-wide until server restart. While the pollution technically bypasses SUPER_ADMIN authorization checks, no practical privileged actions can be performed because database operations fail immediately after pollution. Version 0.301.0 patches the issue.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2026-24766

CVE-2026-24766:

4.9

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
nocodb	npm	< 0.301.0	0.301.0

Technical Details

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Miggo AI

Root Cause Analysis

The vulnerability exists in the deepMerge function located in packages/nocodb/src/utils/dataUtils.ts. This function fails to sanitize input keys, making it susceptible to prototype pollution. The security advisory and the commit patch confirm this. The patch, found in commit a0fafd29186a38fbc855a9d8491568c50d5274dd, introduces a check for reserved keys like __proto__, constructor, and prototype to prevent the pollution. The vulnerability is exposed through the testConnection method in the UtilsController (located in packages/nocodb/src/controllers/utils.controller.ts), which receives user input and passes it to the vulnerable deepMerge function. Therefore, both deepMerge and UtilsController.testConnection are identified as key functions in the exploitation of this vulnerability.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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