CVE-2026-27478: 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…

PriorityP263critical9.1CVSS 3.1

AVNACLPRNUINSUCHIHAN

EPSS

0.18%

8.0th percentile

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
unitycatalog	unitycatalog	<= 0.4.0	—

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