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Low

NocoDB: Attachment Size Limit Bypass via Upload-by-URL

  • Disclosed: 21.05.2026
  • Updated: 11.10.2026 10:22

Summary

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.

Details

The attachments service now checks NC_ATTACHMENT_FIELD_SIZE against both the HEAD response's content-length and the decoded length of a data: URI body before fetching. The local storage plugin additionally sets maxContentLength on the axios download so a malicious server cannot stream past the limit.

Impact

Authenticated users with upload permission could attach files larger than the operator-configured limit, defeating storage and bandwidth caps.

Credit

This issue was reported by @bugbunny-research.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
npm package nocodb <= 0.301.3 no fix

References

CVSS score -
CVSS vector
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
Weakness (CWE)
CWE-770
Platform
npm
Package
nocodb
Disclosed
21.05.2026
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-8rwr-f68v-cvw6 - CC BY 4.0

Vulnerability history: nocodb

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (54) in the archive
Total entries
54
First → latest
06.2022 06.2026
Without a fix
13
Exploited in attacks
0

Severity breakdown

  • High 7
  • Medium 41
  • Low 6

Disclosures per year

Severity:
  1. NocoDB: Stored Cross-Site Scripting via Form View Redirect URL
    High CVE-2026-47387 < 2026.05.1 2026.05.1
  2. NocoDB: Stored Cross-Site Scripting via Row Comments
    High CVE-2026-47383 < 2026.05.1 2026.05.1
  3. NocoDB: Attachment Size Limit Bypass via Upload-by-URL this entry
    Low CVE-2026-46553 <= 0.301.3 no fix
  4. NocoDB Vulnerable to Stored Cross-Site Scripting via SVG upload
    High CVE-2026-24769 < 0.301.0 0.301.0
  5. NocoDB Vulnerable to Stored Cross-Site Scripting in Formula.vue
    High · 7.3 CVE-2023-49781 < 0.202.9 0.202.9
  6. Insufficient Session Expiration in NocoDB
    High · 8.8 CVE-2022-2064 < 0.91.9 0.91.9
  7. Improper Privilege Management in NocoDB
    High · 8.8 CVE-2022-2063 < 0.91.8 0.91.8
  8. NocoDB information disclosure vulnerability
    High · 7.5 CVE-2022-2062 < 0.91.7 0.91.7

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