CVE-2026-46553

Deferred Deferred - Pending Action

Remote File Size Bypass in NocoDB

Publication date: 2026-06-23

Last updated on: 2026-06-25

Assigner: GitHub, Inc.

Description

NocoDB is software for building databases as spreadsheets. Prior to 2026.04.1, the upload-by-URL path did not enforce NC_ATTACHMENT_FIELD_SIZE against either the remote file's advertised Content-Length or the decoded length of a data: URI, allowing an authenticated user to bypass the configured per-file size limit. This vulnerability is fixed in 2026.04.1.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-23

Last Modified

2026-06-25

Generated

2026-07-14

AI Q&A

2026-06-24

EPSS Evaluated

2026-07-13

NVD

CVE-2026-46553

Affected Vendors & Products

Vendor	Product	Version / Range
nocodb	nocodb	to 2026.04.1 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-770	The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Attack-Flow Graph

Executive Summary

This vulnerability exists in NocoDB software versions prior to 2026.04.1. It involves the upload-by-URL feature, which did not properly enforce the configured per-file size limit (NC_ATTACHMENT_FIELD_SIZE). Specifically, an authenticated user could bypass this size restriction by exploiting the way the software handled the remote file's advertised Content-Length or the decoded length of a data: URI.

As a result, users could upload files larger than the allowed size limit, potentially leading to unexpected behavior or resource usage.

Impact Analysis

The impact of this vulnerability is that an authenticated user can upload files exceeding the configured size limits. This could lead to increased storage consumption, potential denial of service due to resource exhaustion, or other unintended consequences related to handling oversized files.

Mitigation Strategies

To mitigate this vulnerability, you should upgrade NocoDB to version 2026.04.1 or later, where the issue with upload-by-URL path enforcing file size limits is fixed.

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