NocoDB: Missing File Size Enforcement in Upload-by-URL Allows Denial of Service via Disk Exhaustion
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.
Summary
NocoDB is software for building databases as spreadsheets. Prior to 2026.04.4, the uploadViaURL path in the v1/v2 attachment API did not enforce NC_ATTACHMENT_FIELD_SIZE against the remote content-length or against the response stream. An authenticated user (Editor+) could direct the server to download arbitrarily large files, exhausting disk space and causing denial of service. In packages/nocodb/src/services/attachments.service.ts, the HEAD probe read content-length but never compared it to NC_ATTACHMENT_FIELD_SIZE; the subsequent storageAdapter.fileCreateByUrl() performed the download without maxContentLength. This vulnerability is fixed in 2026.04.4.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| nocodb | nocodb | before 2026.04.4 | 2026.04.4 | Patch available | CNA |
| — | nocodb (npm) | up to 0.301.3 | — | No fix listed | GHSA-99vc-2jx2-688p |
- nocodb Vendornocodb Affected before 2026.04.4 Fixed in 2026.04.4 Patch available CNA
- nocodb (npm) Vendor— Affected up to 0.301.3 Fixed in — No fix listed GHSA-99vc-2jx2-688p
Remediation
- Fix · CNA nocodb (nocodb) Fixed in 2026.04.4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-46551
- 2026-10-03 Alias added: GHSA-99vc-2jx2-688p
References
More nocodb vulnerabilities
- TI-2023-17918 NocoDB through 0.106.0 (or 0.109.1) has a path traversal vulnerability that allows an… CVSS 3.1HIGH 7.5
- TI-2023-27191 NocoDB Vulnerable to Stored Cross-Site Scripting in Formula.vue CVSS 3.1HIGH 7.6
- TI-2026-19968 NocoDB has Blind SSRF via Unvalidated HEAD Request in uploadViaURL Functionality CVSS 3.1MEDIUM 6.4
- TI-2023-04694 Improper Input Validation in nocodb/nocodb CVSS 3.1MEDIUM 6.5
- TI-2026-34945 NocoDB: Postgres SQL Injection in Formula `ARRAYSORT` CVSS 3.1MEDIUM 6.0
- TI-2025-20338 NocoDB Vulnerable to Reflected Cross-Site Scripting on Reset Password Page CVSS 3.1MEDIUM 6.1
Sources
- CVE-2026-46551 · CVE Program
- CVE-2026-46551 · NVD
- FIRST EPSS
- GHSA-99vc-2jx2-688p · GitHub Advisory Database · CC BY 4.0
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