CVE-2026-46553— NocoDB: Attachment Size Limit Bypass via Upload-by-URL
Quick assessment
Affected
nocodb nocodb
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
NocoDB是nocodb公司开源的一个 Airtable 替代品。将任何 MySql、PostgreSql、Sql Server、Sqlite 和 MariaDb 转换为智能电子表格。 NocoDB 2026.04.1之前版本存在资源管理错误漏洞，该漏洞源于上传-通过URL路径未对远程文件的Content-Length或data: URI的解码长度执行NC_ATTACHMENT_FIELD_SIZE限制，可能导致已认证用户绕过已配置的每文件大小限制。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-46553
Vulnerability Information
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Vulnerability Title
NocoDB: Attachment Size Limit Bypass via Upload-by-URL
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
NocoDB 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NocoDB是nocodb公司开源的一个 Airtable 替代品。将任何 MySql、PostgreSql、Sql Server、Sqlite 和 MariaDb 转换为智能电子表格。 NocoDB 2026.04.1之前版本存在资源管理错误漏洞，该漏洞源于上传-通过URL路径未对远程文件的Content-Length或data: URI的解码长度执行NC_ATTACHMENT_FIELD_SIZE限制，可能导致已认证用户绕过已配置的每文件大小限制。
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
II. Public POCs for CVE-2026-46553
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-46553 (1)
Same Patch Batch · nocodb · 2026-06-23 · 29 CVEs total
| CVE-2026-46551 | 6.5 MEDIUM | NocoDB: Missing File Size Enforcement in Upload-by-URL Allows Denial of Service via Disk E |
| CVE-2026-46547 | 6.1 MEDIUM | NocoDB: Reflected Cross-Site Scripting via Page Leaving Redirect URL |
| CVE-2026-47375 | 6.0 MEDIUM | NocoDB: Postgres SQL Injection in Formula `ARRAYSORT` |
| CVE-2026-46552 | 5.8 MEDIUM | NocoDB: Shared-base link access can invite arbitrary users as persistent base members |
| CVE-2026-46550 | 5.4 MEDIUM | NocoDB: Refresh Token Cookie Set Without `Secure` and `SameSite` Flags |
| CVE-2026-46548 | 4.3 MEDIUM | NocoDB: SSRF Protection Bypass in Notification Webhook Plugins (Slack, Discord, Mattermost |
| CVE-2026-46549 | 2.0 LOW | NocoDB: OAuth Token Scope Not Enforced at ACL Layer Allows Scope Escalation |
| CVE-2026-47377 | NocoDB: Open Redirect via Hash Fragment in hashRedirect Plugin | |
| CVE-2026-46554 | NocoDB: Stale Auth Cache After API Token Deletion | |
| CVE-2026-47385 | NocoDB: Path Traversal via SQLite Source Filename | |
| CVE-2026-47382 | NocoDB: Server-Side Request Forgery via Database Connection Host | |
| CVE-2026-47376 | NocoDB: Reflected Cross-Site Scripting via Password Reset Token | |
| CVE-2026-47384 | NocoDB: SQL Injection via Column Title in Bulk GroupBy | |
| CVE-2026-47386 | NocoDB: OAuth Authorization Code Race Condition | |
| CVE-2026-53929 | NocoDB: Stored Cross-Site Scripting via Secure Attachment | |
| CVE-2026-47381 | NocoDB: Cross-Workspace Integration Use in Connection Test | |
| CVE-2026-47378 | NocoDB: Hidden Column Exposure in Public Shared View Endpoints | |
| CVE-2026-47379 | NocoDB: Plaintext Password Comparison in Shared Views | |
| CVE-2026-47388 | NocoDB: Missing Ownership Check in MCP Attachment Read | |
| CVE-2026-47387 | NocoDB: Stored Cross-Site Scripting via Form View Redirect URL |
Showing top 20 of 29 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: nocodb
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CVE-2026-46547
NocoDB: Reflected Cross-Site Scripting via Page Leaving Redi -
CVE-2026-46548
NocoDB: SSRF Protection Bypass in Notification Webhook Plugi -
CVE-2026-46549
NocoDB: OAuth Token Scope Not Enforced at ACL Layer Allows S -
CVE-2026-46550
NocoDB: Refresh Token Cookie Set Without `Secure` and `SameS -
CVE-2026-46552
NocoDB: Shared-base link access can invite arbitrary users a
Same vendor: nocodb
-
CVE-2026-46547
NocoDB: Reflected Cross-Site Scripting via Page Leaving Redi -
CVE-2026-46548
NocoDB: SSRF Protection Bypass in Notification Webhook Plugi -
CVE-2026-46549
NocoDB: OAuth Token Scope Not Enforced at ACL Layer Allows S -
CVE-2026-46550
NocoDB: Refresh Token Cookie Set Without `Secure` and `SameS -
CVE-2026-46552
NocoDB: Shared-base link access can invite arbitrary users a
Same weakness: CWE-770
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V. Comments for CVE-2026-46553
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