CVE-2026-23904
Last modified
CVE-2026-23904 is a high-severity vulnerability rated 7.3/10 on the CVSS scale. 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.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apache | Kyuubi | >= 1.8.0, < 1.12.0 |
References
- https://lists.apache.org/thread/ps79fcfx49ox9kwgztc5t5bw0tyhck9mMailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/07/29/3Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-23904?
How severe is CVE-2026-23904?
How do I fix CVE-2026-23904?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-23898Lack of input validation leads to an arbitrary file deletion…7.2
- CVE-2026-23899An improper access check allows unauthorized access to webse…8.8
- CVE-2026-23900Various stored XSS vulnerabilities in the maps- and icon ren…6.5
- CVE-2026-23901Observable Timing Discrepancy vulnerability in Apache Shiro.…2.5
- CVE-2026-23902Incorrect Authorization vulnerability in Apache DolphinSched…8.1
- CVE-2026-23903Authentication Bypass by Alternate Name vulnerability in Apa…5.3
- CVE-2026-23906Affected Products and Versions * Apache Druid * Affect…9.8
- CVE-2026-23907This issue affects the ExtractEmbeddedFiles example in Apac…5.3
- CVE-2026-23909Rejected reason: Not used
- CVE-2026-2391### Summary The `arrayLimit` option in qs does not enforce l…7.5
- CVE-2026-23910Rejected reason: Not used
- CVE-2026-23911Rejected reason: Not used
Are you affected by CVE-2026-23904?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST