CVE-2026-46553Network attack vector

Attachment size-limit bypass via unchecked URL uploads

Published Jun 23, 2026 · Updated Jun 23, 2026

Resource-limit bypass in NocoDB before 2026.04.1 allows remote authenticated users to upload oversized attachments by URL. The upload-by-URL path fails to compare remote Content-Length and decoded data URI size with NC_ATTACHMENT_FIELD_SIZE before transfer. Upload permission is required; oversized files consume storage and bandwidth beyond the operator-configured per-file cap.

CVSS severityUnavailable
Unscored
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource-limit bypass in NocoDB before 2026.04.1 allows remote authenticated users to upload oversized attachments by URL. The upload-by-URL path fails to compare remote Content-Length and decoded data URI size with NC_ATTACHMENT_FIELD_SIZE before transfer. Upload permission is required; oversized files consume storage and bandwidth beyond the operator-configured per-file cap.

The record

CVE
CVE-2026-46553
Published
Jun 23, 2026
Updated
Jun 23, 2026
Vendor
NocoDB
Product
NocoDB
Classifications
CWE-770, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2026.04.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NocoDB · NocoDBversion=< 2026.04.1

Published CVSS scores

2.1GitHub CNACVSS: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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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