CVE-2026-23904

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 v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/apache/kyuubi/pull/7483	Patch
https://lists.apache.org/thread/ps79fcfx49ox9kwgztc5t5bw0tyhck9m	Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/07/29/3	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:kyuubi:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-29 10:16

Updated : 2026-08-05 18:36

NVD link : CVE-2026-23904

Mitre link : CVE-2026-23904

CVE.ORG link : CVE-2026-23904

JSON object : View

Products Affected

apache

kyuubi

CWE

CWE-923

Improper Restriction of Communication Channel to Intended Endpoints

{"id": "CVE-2026-23904", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-23904", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-29T14:00:33.613216Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.3, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 3.4, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@apache.org", "affectedData": [{"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"}]}], "published": "2026-07-29T10:16:40.913", "references": [{"url": "https://github.com/apache/kyuubi/pull/7483", "tags": ["Patch"], "source": "security@apache.org"}, {"url": "https://lists.apache.org/thread/ps79fcfx49ox9kwgztc5t5bw0tyhck9m", "tags": ["Mailing List", "Vendor Advisory"], "source": "security@apache.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/07/29/3", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@apache.org", "description": [{"lang": "en", "value": "CWE-923"}]}], "descriptions": [{"lang": "en", "value": "Kyuubi Engine UI proxy accepts a host and port from the request path and proxies HTTP requests to that destination.\u00a0A 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.\n\n\nThis issue affects Apache Kyuubi: from 1.8.0 before 1.12.0.\n\nUsers are recommended to upgrade to version 1.12.0, which disables the proxy by default.\u00a0To 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."}], "lastModified": "2026-08-05T18:36:12.800", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:apache:kyuubi:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C91B47BA-EB31-4B09-B743-BCA028DB4855", "versionEndExcluding": "1.12.0", "versionStartIncluding": "1.8.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@apache.org"}