CVE-2026-88982: medium-severity vulnerability in kubeflow pipelines
Kubeflow Pipelines: Cross-tenant execution-cache poisoning / output substitution via a namespace-blind cache key in the cache webhook (multi-user)
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
10Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.4
Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.18.0, the legacy V1/raw-Argo execution cache mutating webhook and cache-server storage path hash selected template fields without the Kubernetes namespace, use the key alone for lookups and duplicate checks, and trust the mutable pipelines.kubeflow.org/execution_cache_key annotation when publishing outputs. In multi-user deployments where tenant namespaces share the cache service, a tenant with workload-submission privileges can read another namespace's cached outputs or seed matching outputs that are substituted into a later step. Standard KFP V2 component pods bypass this cache, matching requires the selected template fields and staleness policy, and arbitrary code execution or service availability impact is not established. This issue is fixed in version 2.18.0.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Affected products
kubeflow · pipelinesRelated CVEs — kubeflow pipelines
In the same product, most dangerous first.
CVE-2026-54745CRITICALKubeflow Pipelines: Unauthenticated SSRF and HTTP smuggling in Kubeflow Pipelines frontend /_proxy/ route, bypasses ENABLE_AUTHZ=trueEPSS 0.6%CVE-2026-118758HIGHKubeflow: Unauthenticated path traversal to arbitrary file read on ml-pipeline-ui via the volume artifact sourceEPSS 0.5%CVE-2026-118761HIGHKubeflow Pipelines: Pipeline archive upload allows decompression bomb to exhaust server memoryEPSS 0.5%CVE-2026-118760MEDIUMKubeflow Pipelines: Missing namespace authorization permits cross-tenant artifact readsEPSS 0.4%CVE-2026-118759HIGHKubeflow Pipelines: Run log streaming endpoint bypasses namespace authorization, exposing pod execution logs cross-tenantEPSS 0.3%CVE-2026-77596CRITICALKubeflow Pipelines API server lacks authorization for shared pipeline uploadsEPSS —