CVE-2026-97146: Vulnerability in Apache Software Foundation Apache YuniKorn
Description
Apache YuniKorn 1.9.0 and earlier allows bypassing the check for the user annotation by setting a secondary label on the pod. If the pod has the label 'app=yunikorn' the checks limiting the user annotation content are not run. The label is used to identify the YuniKorn application itself in the deployments. The bypass allows any user to specify an arbitrary user info annotation. The arbitrary user information 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 v4.0
Score 4.8medium
Affected software
Apache Software Foundation
Apache YuniKorn
pkg:github/github.com/apache/yunikorn-k8shimRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Apache YuniKorn versions prior to 1.10.0 allow bypassing the validation of user annotations by setting a secondary label 'app=yunikorn' on pods. This label is used internally to identify YuniKorn application deployments, and when present, the system skips checks that limit the content of user annotations. As a result, any user can specify arbitrary user information annotations, which may allow unauthorized access to queues and affect user-based quota enforcement and tracking.
Potential Impact
Unauthorized users may gain access to queues they are not permitted to use, potentially impacting resource allocation and quota enforcement within Apache YuniKorn. This could lead to quota usage being inaccurately tracked or circumvented, affecting multi-tenant resource management.
Mitigation Recommendations
Users should upgrade to Apache YuniKorn version 1.10.0, which addresses this vulnerability by properly enforcing user annotation checks regardless of pod labels.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-09-24T01:13:32.307Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ac612062cdf04f65633b1f0
Added to database: 10/07/2026, 09:33:58 UTC
Last enriched: 10/07/2026, 09:48:17 UTC
Last updated: 10/07/2026, 21:56:08 UTC
Views: 21
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