CVE-2026-62391
HighCVSS 8.1Exploitation Probability (EPSS)
Low risk33th percentile - higher than 33% of all known CVEs
Summary
The security fix for CVE-2025-66518 in Apache Kyuubi is incomplete. Any client with access to the Kyuubi server via frontend protocols can bypass the server-side config kyuubi.session.local.dir.allowlist using unprefixed Spark config aliases. This affects versions from 1.6.0 before 1.12.0.
Risk Assessment
The risk is bypassing the allowed local directory list, potentially leading to unauthorized file access or code execution in the context of the Kyuubi server.
Recommendation
Upgrade Apache Kyuubi to version 1.12.0, which contains the complete fix.
Other vulnerabilities in Apache Kyuubi
See all- CVE-2025-66518High
Any client with access to Apache Kyuubi Server via Kyuubi frontend protocols can bypass the server-side config kyuubi.session.local.dir.allow.list and use local files not listed in the config. This issue affects Apache Kyuubi from 1.6.0 through 1.10.2.
- CVE-2026-52680Critical
Apache Kyuubi versions 1.7.0 through 1.11.1 are vulnerable to path traversal during REST batch multipart upload handling. An attacker can provide path traversal sequences in the filename, allowing content to be written outside the intended directory.
- CVE-2026-23904High
Kyuubi Engine UI proxy accepts a host and port from the request path and proxies HTTP requests to that destination. A remote attacker with network access can cause SSRF or open-proxy behavior.
Original NVD description (English source)
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.