CVE-2026-27478

CRITICAL

9.1

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.

CVE Details

CVSS v3.1 Score9.1

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/11/2026

Last Modified3/16/2026

Sourcenvd

Honeypot Sightings0

Affected Products

unitycatalog:unitycatalog

Weaknesses (CWE)

CWE-290CWE-346CWE-1390

References

https://github.com/unitycatalog/unitycatalog/security/advisories/GHSA-qqcj-rghw-829x(security-advisories@github.com)

IOC Correlations

No correlations recorded

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