# CVE-2026-62391

## Summary

- **CVE ID:** CVE-2026-62391
- **Severity:** HIGH
- **CVSS Score:** 8.1 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)
- **CWE:** CWE-22, CWE-27
- **Published:** Jul 31, 2026
- **Last Modified:** Jul 31, 2026

## Description

The security fix for CVE-2025-66518 is incomplete. Any client who can access to Apache Kyuubi Server via Kyuubi frontend protocols can bypass server-side config kyuubi.session.local.dir.allowlist via unprefixed Spark config aliases.

This issue affects Apache Kyuubi: from 1.6.0 before 1.12.0.

Users are recommended to upgrade to version 1.12.0, which fixes the issue.

## Affected Products

- Apache Software Foundation — Apache Kyuubi (1.6.0)

## References

- [CNA](https://lists.apache.org/thread/vo4k4nxz23kfzrpp120nsojb0vrkx4w1)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.52%
- **EPSS Percentile:** 42.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._