{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-50564: Fission Environment CRD podspec passthrough enables hostPID/hostNetwork/privileged pods, node escape","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-50564","status":"final","version":"1","initial_release_date":"2026-06-10T17:27:34.232Z","current_release_date":"2026-06-12T03:55:21.976Z","revision_history":[{"date":"2026-06-10T17:27:34.232Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, Fission's Environment CRD exposes spec.runtime.podSpec and spec.builder.podSpec, which are merged into the Kubernetes pod specs for runtime and builder pods. The merge logic propagated hostNetwork, hostPID, hostIPC, container privileged, and serviceAccountName from the user-supplied podspec with no filtering, and Environment.Validate performed no security-relevant checks on these fields. This issue has been patched in version 1.24.0.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-50564 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-50564"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-50564"},{"category":"external","summary":"https://github.com/fission/fission/security/advisories/GHSA-gx55-f84r-v3r7","url":"https://github.com/fission/fission/security/advisories/GHSA-gx55-f84r-v3r7"},{"category":"external","summary":"https://github.com/fission/fission/pull/3391","url":"https://github.com/fission/fission/pull/3391"},{"category":"external","summary":"https://github.com/fission/fission/releases/tag/v1.24.0","url":"https://github.com/fission/fission/releases/tag/v1.24.0"}]},"product_tree":{"branches":[{"category":"vendor","name":"fission","branches":[{"category":"product_name","name":"fission","branches":[{"category":"product_version","name":"< 1.24.0","product":{"name":"fission fission < 1.24.0","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:fission:fission:\\<_1.24.0:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-50564","title":"Fission Environment CRD podspec passthrough enables hostPID/hostNetwork/privileged pods, node escape","notes":[{"category":"description","text":"Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, Fission's Environment CRD exposes spec.runtime.podSpec and spec.builder.podSpec, which are merged into the Kubernetes pod specs for runtime and builder pods. The merge logic propagated hostNetwork, hostPID, hostIPC, container privileged, and serviceAccountName from the user-supplied podspec with no filtering, and Environment.Validate performed no security-relevant checks on these fields. This issue has been patched in version 1.24.0.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":9.9,"baseSeverity":"CRITICAL"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}