CVSS 3.1
9.1 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NCVE-2026-27478
Critical (9.1) in unitycatalog unitycatalog. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in io.unitycatalog:unitycatalog-server 0.4.1.
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.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-290, CWE-346, CWE-1390
- Published
- Modified
- Record from
- the NVD, synced
Affected
- unitycatalog:unitycatalog
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-qqcj-rghw-829x | Maven | io.unitycatalog:unitycatalog-server | <0.4.1 | 0.4.1 |