CVE-2026-92393
Received Received - Intake

Privilege Escalation in Apache YuniKorn

Publication date: 2026-10-07

Last updated on: 2026-10-07

Assigner: Apache Software Foundation

Description
Apache YuniKorn 1.9.0 and earlier does not implement label and user annotation checks for workload UPDATE action bypassing all checks. Workloads in YuniKorn are defined as the following Kubernetes objects: "deployments", "replicasets", "statefulsets", "daemonsets", "jobs", "cronjobs". The CREATE action correctly enforces the checks for all object types. The bypass allows any user to specify an arbitrary user info annotation. The same bypass also allows changing the application ID for the workload. The combination of the two applied in one UPDATE could allow access to a queue that the user normally would not have access to. Quota usage for the queue might be impacted if the application runs in the incorrect queue. User based quota enforcement is also based on the user annotation. User quota tracking could be side stepped even if the application runs in the correct queue. Users are recommended to upgrade to version 1.10.0, which fixes this issue.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-07
Last Modified
2026-10-07
Generated
2026-10-07
AI Q&A
2026-10-07
EPSS Evaluated
N/A
NVD
CVE-2026-92393
EUVD
EUVD-2026-94253

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Apache Software Foundation Apache YuniKorn 0

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

Apache YuniKorn 1.9.0 and earlier has a flaw where label and user annotation checks are not enforced during workload UPDATE actions. This allows users to bypass admission controls by setting arbitrary user info annotations or changing the application ID. The CREATE action correctly enforces these checks.

Impact Analysis

An attacker could exploit this to gain access to restricted queues, alter quota usage for queues, or bypass user-based quota enforcement. This could lead to unauthorized resource consumption or privilege escalation within the cluster.

Mitigation Strategies

Upgrade Apache YuniKorn to version 1.10.0 or later to fix the vulnerability. Review workload UPDATE operations to ensure no unauthorized changes to user annotations or application IDs have occurred.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-92393. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart