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Apache YuniKorn: Admission control bypass via workload UPDATE operation

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-92393

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-92393

Apache YuniKorn

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "Apache Software Foundation",
    "product": "Apache YuniKorn",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "1.10.0",
        "versionType": "semver"
      }
    ],
    "packageURL": "pkg:golang/github.com/apache/yunikorn-k8shim",
    "packageName": "github.com/apache/yunikorn-k8shim",
    "collectionURL": "https://golang.org/pkg",
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-92393

Source reference: /cveMetadata/cveId

Publisher severity

low

Source reference: /containers/cna/metrics

Event
#12097 · Revision 1
Added to Heist Feed
Publisher date
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