CVE-2026-47386: NocoDB OAuth Authorization Code Race Condition Vulnerability

MODERATE
Advisory Identifier: GHSA-8m7c-hf24-5g47
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CWE-362
Published
Advisory Summary

CVE-2026-47386 is a MODERATE oauth authorization code race condition vulnerability (CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')) affecting NocoDB libraries in the npm ecosystem. The issue involves oauth authorization code race condition. Remediation is available by upgrading affected packages to version 2026.05.1.

CVE-2026-47386 at a Glance

CVE Identifier CVE-2026-47386
GHSA Identifier GHSA-8m7c-hf24-5g47
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Affected Product NocoDB
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2026-47386

To remediate this vulnerability, upgrade all affected NocoDB dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

nocodb fixed: 2026.05.1 
npm install nocodb@2026.05.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls nocodb

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-47386, inspect your project dependencies using npm:

npm ls nocodb

Analyze the terminal output to locate any version of NocoDB in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2026.05.1), your application is affected.

Note: The npm ls nocodb command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'), where the product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. In NocoDB, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Summary Two concurrent token-exchange requests using the same OAuth authorization code could each mint a distinct valid `(access_token, refresh_token)` pair, breaking the single-use guarantee that PKCE relies on. ### Details The token-exchange flow read `is_used` and called `markAsUsed` as an unconditional update at the end of the path. A new `OAuthAuthorizationCode.claimByCode` method now performs an atomic compare-and-swap (`WHERE code = ? AND is_used = false`) and is called immediately before `OAuthToken.insert`, after redirect-URI, PKCE, and client authentication have all succeeded. Only the first concurrent caller's `UPDATE` wins; the rest see `invalid_grant: Authorization code has already been used`. ### Impact An attacker who has observed an authorization code and the corresponding PKCE verifier (for example through a malicious OAuth-aware client or by racing a real exchange) could obtain a long-lived refresh token in addition to the legitimate one. ### Credit This issue was reported by [@eddieran](https://github.com/eddieran).

CVE-2026-47386 Affected NocoDB Versions

1 component(s)
Fixed Versions:
2026.05.1
Product / Package Ecosystem Affected Versions Fixed Version
nocodb
npm/nocodb
npm
< 2026.05.1
2026.05.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/nocodb/nocodb/security/advisories/GHSA-8m7c-hf24-5g47
NVD — CVE-2026-47386 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47386
NocoDB Source Repository REPOSITORY
https://github.com/nocodb/nocodb
NocoDB Release RELEASE
https://github.com/nocodb/nocodb/releases/tag/2026.05.1

Frequently Asked Questions

What is CVE-2026-47386?
CVE-2026-47386 is a security vulnerability in NocoDB involving OAuth Authorization Code Race Condition under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition').
Which NocoDB versions are affected?
Affected versions include releases prior to 2026.05.1 across affected packages: nocodb.
What version fixes CVE-2026-47386?
Upgrading to 2026.05.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is nocodb affected?
Yes, nocodb is affected in releases prior to 2026.05.1. Upgrade your dependency to 2026.05.1 or later.
What CWE is associated with CVE-2026-47386?
CVE-2026-47386 is classified under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') (The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.).
How can I check npm dependencies for CVE-2026-47386?
Run the dependency tree command: 'npm ls nocodb'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-8m7c-hf24-5g47",
  "modified" : "2026-07-20T21:18:55Z",
  "published" : "2026-06-05T16:20:32Z",
  "aliases" : [ "CVE-2026-47386" ],
  "summary" : "NocoDB: OAuth Authorization Code Race Condition",
  "details" : "### Summary\nTwo concurrent token-exchange requests using the same OAuth authorization code could\neach mint a distinct valid `(access_token, refresh_token)` pair, breaking the\nsingle-use guarantee that PKCE relies on.\n\n### Details\nThe token-exchange flow read `is_used` and called `markAsUsed` as an unconditional\nupdate at the end of the path. A new `OAuthAuthorizationCode.claimByCode` method now\nperforms an atomic compare-and-swap (`WHERE code = ? AND is_used = false`) and is\ncalled immediately before `OAuthToken.insert`, after redirect-URI, PKCE, and client\nauthentication have all succeeded. Only the first concurrent caller's `UPDATE` wins;\nthe rest see `invalid_grant: Authorization code has already been used`.\n\n### Impact\nAn attacker who has observed an authorization code and the corresponding PKCE\nverifier (for example through a malicious OAuth-aware client or by racing a real\nexchange) could obtain a long-lived refresh token in addition to the legitimate one.\n\n### Credit\nThis issue was reported by [@eddieran](https://github.com/eddieran).",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "nocodb"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2026.05.1"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2026.05.0"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/nocodb/nocodb/security/advisories/GHSA-8m7c-hf24-5g47"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-47386"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/nocodb/nocodb"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nocodb/nocodb/releases/tag/2026.05.1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-362" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-05T16:20:32Z",
    "nvd_published_at" : "2026-06-23T21:17:00Z"
  }
}