CVE-2025-32777
highpriority · track · 0EPSS 0.005 · 41 %ileEUUSEPSS · scored 2026-10-27
Volcano is a Kubernetes-native batch scheduling system. Prior to versions 1.11.2, 1.10.2, 1.9.1, 1.11.0-network-topology-preview.3, and 1.12.0-alpha.2, attacker compromise of either the Elastic service or the extender plugin can cause denial of service of the scheduler. This is a privilege escalation, because Volcano users may run their Elastic service and extender plugins in separate pods or nodes from the scheduler. In the Kubernetes security model, node isolation is a security boundary, and as such an attacker is able to cross that boundary in Volcano's case if they have compromised either the vulnerable services or the pod/node in which they are deployed. The scheduler will become unavailable to other users and workloads in the cluster. The scheduler will either crash with an unrecoverable OOM panic or freeze while consuming excessive amounts of memory. This issue has been patched in versions 1.11.2, 1.10.2, 1.9.1, 1.11.0-network-topology-preview.3, and 1.12.0-alpha.2.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–8.2
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (10)
Products and version ranges known to be affected.
- volcano-sh volcano1.11.0-network-topology-preview.0, → 1.11.0-network-topology-preview.3enisa_euvdEU
- Go volcano.sh/volcano1.11.0-network-topology-preview.0 → 1.11.0-network-topology-preview.3osvUSpkg:golang/volcano.sh/volcano
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-hg79-fw4p-25p8Volcano Scheduler Denial of Service via Unbounded Response from Elastic Service/extender Plugin2025-04-30ghsa · osvUS
### Impact This issue allows an attacker who has compromised either the Elastic service or the extender plugin to cause denial of service of the scheduler. This is a privilege escalation, because Volcano users may run their Elastic service and extender plugins in separate pods or nodes from the scheduler. In the Kubernetes security model, node isolation is a security boundary, and as such an attacker is able to cross that boundary in Volcano's case if they have compromised either the vulnerable services or the pod/node in which they are deployed. The scheduler will become unavailable to other users and workloads in the cluster. The scheduler will either crash with an unrecoverable OOM panic or freeze while consuming excessive amounts of memory. ### Workarounds No
- GO-2025-3656Volcano Scheduler Denial of Service via Unbounded Response from Elastic Service/extender Plugin in volcano.sh/volcano2025-05-06vendor · osvUS
Volcano Scheduler Denial of Service via Unbounded Response from Elastic Service/extender Plugin in volcano.sh/volcano
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (19)
External citations — patches, advisories, analysis.
- https://github.com/volcano-sh/volcano/releasesPatchcnnvd
- https://github.com/volcano-sh/volcano/releases/tag/v1.10.2cnnvd
- https://github.com/volcano-sh/volcano/releases/tag/v1.11.0-network-topology-preview.3cnnvd
- https://github.com/volcano-sh/volcano/releases/tag/v1.11.2cnnvd
- https://github.com/volcano-sh/volcano/releases/tag/v1.12.0-alpha.2cnnvd
- https://github.com/volcano-sh/volcano/releases/tag/v1.9.1cnnvd
- https://github.com/volcano-sh/volcano/security/advisories/GHSA-hg79-fw4p-25p8cnnvd
- https://github.com/volcano-sh/volcano/releases/tag/v1.10.2enisa_euvd
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