CVE-2026-126276

MEDIUM 6.3

NocoDB before 2026.08.1 Client Authentication Bypass via OAuth Token Exchange

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

NocoDB before 2026.08.1 contains an authentication bypass vulnerability in oauth-token.service.ts that treats PKCE as a substitute for confidential client authentication, skipping client secret verification when omitted. Attackers holding a captured authorization code and PKCE verifier can mint access tokens and 60-day refresh tokens for a confidential client without knowing its secret.

CWE	CWE-287
Vendor	nocodb
Product	nocodb
Published	Nov 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

nocodb / nocodb

0 < 2026.08.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/nocodb/nocodb/security/advisories/GHSA-4cx5-q9xx-5pgj vulncheck.com: https://www.vulncheck.com/advisories/nocodb-before-2026.08.1-client-authentication-bypass-via-oauth-token-exchange

Credits

🔍 mantraak