How severe is CVE-2026-46553?

No CVSS score has been assigned to CVE-2026-46553 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2026-46553?

CVE-2026-46553 affects the following packages: nocodb (npm). Ecosystems affected: npm.

How do I fix CVE-2026-46553?

No patched version of nocodb has shipped for CVE-2026-46553 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

How do I detect CVE-2026-46553 in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for nocodb, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-46553 if there is no patch (or I can't update yet)?

Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Is CVE-2026-46553 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-46553 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-46553?

CVE-2026-46553 has an EPSS (Exploit Prediction Scoring System) score of 0.4%, placing it in the 32th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-46553?

CVE-2026-46553 is classified as CWE-770 (CWE-770). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2026-46553 published, and has it been updated?

CVE-2026-46553 was published on June 23, 2026 and was last updated on August 12, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

CVE-2026-46553 — nocodb

CVE-2026-46553 is a CWE-770 vulnerability in nocodb. No vendor fix is recorded yet; mitigation options are listed below.

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

Also known asGHSA-8rwr-f68v-cvw6

Published

Jun 23, 2026

Updated

Aug 12, 2026

Affected

1 pkg

Patched

None yet

Exploits

None indexed

Exploitation data as of Sep 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-46553.

EPSS Exploitation Probability

via FIRST.org ↗

0.4%probability of exploitation in next 30 days

Lower Risk+0.17%

Lower risk than most CVEs32th percentile — riskier than 32% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

0other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

nocodbnpm

2Kdownloads / week

Description

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 Packages

1 total

Ecosystem	Package	Vulnerable range	Fix
📦npm	`nocodb`	all versions	No fix

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for nocodb, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of nocodb has shipped for CVE-2026-46553 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

### 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 Authentic

O3 Security · Impact-Aware SCA

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