CVE-2026-92393 Apache Software Foundation CVE debrief

Who should care

Defenders responsible for Apache YuniKorn deployments should assess exposure and prioritize upgrading to version 1.10.0. Defenders should care about this vulnerability as it allows for admission control bypass via workload UPDATE operation, potentially leading to unauthorized access and impact on quota usage and user quota tracking. Users are recommended to upgrade to version 1.10.0, which fixes this issue.

Why it matters

Defenders should care about this vulnerability as it allows for admission control bypass via workload UPDATE operation, potentially leading to unauthorized access and impact on quota usage and user quota tracking.

• Potential unauthorized access to queues
• Impact on quota usage and user quota tracking
• Bypass of user based quota enforcement

Technical summary

Apache YuniKorn 1.9.0 and earlier does not implement label and user annotation checks for workload UPDATE action, bypassing all checks. This allows any user to specify an arbitrary user info annotation and change the application ID for the workload. 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.

Defensive priority

Defenders should prioritize upgrading to version 1.10.0, which fixes this issue, and verify the correct configuration of user annotations and application IDs.

Recommended defensive actions

• Upgrade to version 1.10.0
• Verify correct configuration of user annotations and application IDs
• Monitor quota usage and user quota tracking
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the vulnerability, including the affected version and fixed version. Apache YuniKorn 1.9.0 and earlier does not implement label and user annotation checks for workload UPDATE action, bypassing all checks. This allows any user to specify an arbitrary user info annotation and change 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

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.