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🛡️ CVE-2026-47388 — nocodb

🟢 CVSS 2.0 — Low ✅ No Known Exploit CWE-639 NVD
2.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

NocoDB: Missing Ownership Check in MCP Attachment Read

Summary

A low-privilege MCP token holder with knowledge of an attachment path could read any

file in shared storage, including attachments belonging to other bases and workspaces,

because the MCP readAttachment tool did not verify the file's ownership.

Details

The MCP readAttachment tool accepts caller-supplied path/url values and streams

the file via the storage adapter. The handler now looks up the path in

nc_file_references and requires a non-deleted row whose base_id matches the

caller's MCP context before streaming; otherwise it returns

Attachment is not accessible from this MCP context. The lookup tolerates both

download/uploads/... and uploads/... styles.

Impact

Arbitrary read against shared storage scoped to attachments the caller's MCP context

should not see. Exploitation requires an MCP token and a known attachment path.

Credit

This issue was reported by [@helwor-01](https://github.com/helwor-01).

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. Rated impact: confidentiality low, integrity none, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
  • Attack requirements: None — no deployment-specific condition has to hold.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
  • Integrity impact: None.
  • Availability impact: None.

Weakness class

CVE-2026-47388 is classified as CWE-639: Authorization Bypass Through User-Controlled Key. An object is selected by an identifier from the request without checking the caller owns it.

Affected software

CVE-2026-47388 is recorded against 2 packages.

  • nocodb (fixed in 2026.05.1)
  • unknown

Timeline and source

Published on 5 June 2026 and last revised on 20 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Package)
github.com (Web)

Other advisories for this package

nocodb has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-639: Authorization Bypass Through User-Controlled Key) in other software:

Details

Severity LOW
CVSS Score 2.0
CVSS Vector CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CWE CWE-639
Public Exploit ✅ No
Source NVD
Published 2026-06-05
Updated 2026-08-20
Modified 2026-07-20
Fix URL N/A

Affected Packages

Software From version Fixed in
nocodb — 2026.05.1
unknown — —

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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