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CVE-2026-27478

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CVE-2026-27478

Published: Mar 11, 2026

Modified: Mar 12, 2026

PUBLISHED

CVSS v3.1

9.1

CRITICAL

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.

VendorProductVersions

unitycatalog

unitycatalog

affected
<= 0.4.0

Weaknesses (CWE)

CWE-290
CWE-346
CWE-1390

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

References

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