← Vulnerability feed

Vulnerability record · CVE-2026-23904 · published 29 July 2026

CVE-2026-23904: Apache kyuubi vulnerability

Apache · Kyuubi

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.

7.3 CVSS 3.1 High EPSS 0.85% · top 43.5% CWE-923 · CWE-923
7.3CVSS 3.1 base score
0.85%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
5 Aug 2026Last modified by NVD

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/apache/kyuubi/pull/7483 Patch
https://lists.apache.org/thread/ps79fcfx49ox9kwgztc5t5bw0tyhck9m Mailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/07/29/3 Mailing ListThird Party Advisory

Track CVE-2026-23904 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-52680Apache kyuubi path traversal vulnerabilityApache Kyuubi REST batch multipart upload handling uses the client-supplied multipart filename when creating a temporary uploaded resource. A remote …EPSS 1.1%8.8CVE-2025-66518Apache kyuubi path traversal vulnerabilityAny client who can access to Apache Kyuubi Server via Kyuubi frontend protocols can bypass server-side config kyuubi.session.local.dir.allow.list and…EPSS 1.1%8.1CVE-2026-62391Apache kyuubi path traversal vulnerabilityThe security fix for CVE-2025-66518 is incomplete. Any client who can access to Apache Kyuubi Server via Kyuubi frontend protocols can bypass server-…EPSS 0.79%

Source: NIST National Vulnerability Database (record CVE-2026-23904), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.