VULNERABILITY INTELLIGENCE

CVE-2026-27478

CVSS score9.1 CRITICAL
EPSS probability0.19%
CISA KEVNot currently listed
Published2026-03-11
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Description

Unity Catalog is an open, multi-modal Catalog for data and AI. In 0.4.0 and earlier, a critical authentication bypass vulnerability exists in the Unity Catalog token exchange endpoint (/api/1.0/unity-control/auth/tokens). The endpoint extracts the issuer (iss) claim from incoming JWTs and uses it to dynamically fetch the JWKS endpoint for signature validation without validating that the issuer is a trusted identity provider.

Weakness classification

  • CWE-290: Authentication Bypass by Spoofing
  • CWE-346: Origin Validation Error
  • CWE-1390: Weak Authentication

Primary references