CVE-2026-23904
Apache Kyuubi: Unrestricted access via Kyuubi engine-ui proxy
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.
INFO
Published Date :
July 29, 2026, 10:16 a.m.
Last Modified :
July 29, 2026, 11:16 a.m.
Remotely Exploit :
No
Source :
[email protected]
Solution
- Upgrade to Apache Kyuubi 1.12.0 or later.
- Set kyuubi.frontend.rest.engine.ui.proxy.enabled=true if needed.
- Configure allowed hosts with kyuubi.frontend.rest.engine.ui.proxy.hosts.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-23904.
| URL | Resource |
|---|---|
| https://github.com/apache/kyuubi/pull/7483 | |
| https://lists.apache.org/thread/ps79fcfx49ox9kwgztc5t5bw0tyhck9m | |
| http://www.openwall.com/lists/oss-security/2026/07/29/3 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-23904 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-23904
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-23904 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-23904 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Jul. 29, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/07/29/3 -
New CVE Received by [email protected]
Jul. 29, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Apache Software Foundation', 'product': 'Apache Kyuubi', 'versions': [{'status': 'affected', 'version': '1.8.0', 'lessThan': '1.12.0', 'versionType': 'semver'}], 'packageName': 'org.apache.kyuubi:kyuubi-server', 'collectionURL': 'https://repo.maven.apache.org/maven2', 'defaultStatus': 'unaffected'}] Added 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. Added CWE CWE-923 Added Reference https://github.com/apache/kyuubi/pull/7483 Added Reference https://lists.apache.org/thread/ps79fcfx49ox9kwgztc5t5bw0tyhck9m