{"items":[{"id":"NVI-00017561","kind":"vulnerability","title":"Fission Environment CRD PodSpec Injection Leading to Node Escape and Cluster Takeover","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-wmgg-3p4h-48x7","CVE-2026-50545"],"plain_summary":"GitHub lists this reviewed advisory for github.com/fission/fission. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-203f0d16472611d5b310ae71de75ad01"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-06-30T18:18:06.000Z","value":"9.9 critical","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-203f0d16472611d5b310ae71de75ad01"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-203f0d16472611d5b310ae71de75ad01","url":"https://github.com/advisories/GHSA-wmgg-3p4h-48x7","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-wmgg-3p4h-48x7","publisher":"GitHub Advisory Database","observed_at":"2026-11-05T11:39:31.286Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-203f0d16472611d5b310ae71de75ad01"],"technology":"github.com/fission/fission","known_exclusions":[],"conditions_summary":"### Summary\n\nA stronger framing of the same root cause as GHSA-gx55-f84r-v3r7: the `Environment.spec.runtime.podSpec` / `spec.builder.podSpec` passthrough lacked validation, and `MergePodSpec` propagated dangerous fields into the generated pods.\n\n### Details\n\nThree independent flaws compounded:\n\n1. **Validate gap.** `pkg/apis/core/v1/validation.go::Environment.Validate` checked only container naming conventions, never `hostPID`/`hostIPC`/`hostNetwork`/`hostPath`/`privileged`.\n2. **UPDATE bypass.** The `pkg/webhook/environment.go` kubebuilder marker registered `verbs=create` only. A tenant could `kubectl apply` a clean Environment and then `kubectl patch` in the dangerous fields — the webhook was never called.\n3. **Merge propagation.** `pkg/executor/util/merge.go::MergePodSpec` unconditionally forwarded `HostPID`, `HostIPC`, `HostNetwork`, `Volumes` (including hostPath), `SecurityContext`, and `ServiceAccountName` into the Deployments\ngenerated by poolmgr / newdeploy / buildermgr.\n\nA `kubectl apply` plus a follow-up `kubectl patch` caused poolmgr to schedule a privileged pod with a host-root mount within roughly 20 seconds. From that pod the cluster CA private key was readable, allo","public_affected_ranges":["<= 1.23.0"]}],"null_published_at":"2026-11-05T19:10:21.415Z","source_updated_at":"2026-06-30T18:18:06.000Z","source_disclosed_at":"2026-06-30T18:18:05.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-05T11:39:31.286Z"}],"next_cursor":null,"snapshot_revision":"42594"}