Is CVE-2026-27478 actively exploited?

No active exploitation of CVE-2026-27478 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-27478 be exploited remotely?

Yes. CVE-2026-27478 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-27478?

CVE-2026-27478 has a CVSS score of 9.1 (CRITICAL).

HOME VULNERABILITIESCVE-2026-27478

CRITICAL

CVE-2026-27478

CWE-290Published: March 11, 2026· Updated: Mar 16, 2026

9.1

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:5.5th

Official 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.

NVD Source

Technical Analysis

CVE-2026-27478 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.