Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Kyuubi | >= 1.8.0, < 1.12.0 |
Related Weaknesses (CWE)
References
- https://github.com/apache/kyuubi/pull/7483Patch
- https://lists.apache.org/thread/ps79fcfx49ox9kwgztc5t5bw0tyhck9mMailing ListVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/07/29/3Mailing ListThird Party Advisory
FAQ
What is CVE-2026-23904?
CVE-2026-23904 is a vulnerability with a CVSS score of 7.3 (HIGH). 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 s...
How severe is CVE-2026-23904?
CVE-2026-23904 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23904?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Kyuubi.