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TI-2026-19260 Aliases CVE-2026-23904GHSA-qvj4-xxw2-22gf

Apache Kyuubi: Unrestricted access via Kyuubi engine-ui proxy

Priority MEDIUM 40CWE-923Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Kyuubi Engine UI proxy accepts a host and port from the request path and proxies HTTP requests to that destination. A remote requester with network access to the proxy can cause the Kyuubi server to send HTTP requests to arbitrary reachable hosts, resulting in SSRF or open-proxy behavior. This issue affects Apache Kyuubi: from 1.8.0 before 1.12.0. Users are recommended to upgrade to version 1.12.0, which disables the proxy by default. To restore proxied Engine UI, set kyuubi.frontend.rest.engine.ui.proxy.enabled=true and configure allowed target hosts with kyuubi.frontend.rest.engine.ui.proxy.hosts.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0085 58th percentileScored 2026-11-07
Fix Fixed Apache Kyuubi (Apache Software Foundation): 1.12.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Kyuubi1.8.0 to before 1.12.01.12.0Patch availableCNA
  • Apache Kyuubi VendorApache Affected 1.8.0 to before 1.12.0 Fixed in 1.12.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:kyuubi:*:*:*:*:*:*:*:*1.8.0 to before 1.12.0VulnerableApache
  • cpe:2.3:a:apache:kyuubi:*:*:*:*:*:*:*:* Versions 1.8.0 to before 1.12.0 Vulnerable ·Apache

Remediation

  • Fix · CNA Apache Kyuubi (Apache Software Foundation) Fixed in 1.12.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-23904
  2. 2026-10-03 Alias added: GHSA-qvj4-xxw2-22gf

References

Patch 1

Advisory 2

  • TI-2026-37809 Apache Kyuubi: REST batch multipart upload path traversal allows controlled file write CVSS 3.1CRITICAL 9.8
  • TI-2025-40939 Apache Kyuubi: Unauthorized directory access due to missing path normalization CVSS 4.0HIGH 8.8
  • TI-2026-44530 Apache Kyuubi: kyuubi.session.local.dir.allow.list bypass via unprefixed Spark file-conf aliases CVSS 3.1HIGH 8.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences