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Description

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, a tenant with environments.fission.io create/update RBAC can run privileged / allowPrivilegeEscalation / dangerous-capability containers in the Fission function or builder namespace, scheduled under the executor's high-privilege service account — enabling container-sandbox escape, host filesystem and network access, and potential node- and cluster-level compromise. This issue has been patched in version 1.24.0.

PUBLISHED Reserved 2026-06-04 | Published 2026-06-10 | Updated 2026-06-10 | Assigner GitHub_M




CRITICAL: 9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Problem types

CWE-250: Execution with Unnecessary Privileges

CWE-269: Improper Privilege Management

Product status

< 1.24.0
affected

References

github.com/...ission/security/advisories/GHSA-m63v-2g9w-2w6v exploit

github.com/...ission/security/advisories/GHSA-m63v-2g9w-2w6v

github.com/fission/fission/pull/3406

github.com/fission/fission/releases/tag/v1.24.0

cve.org (CVE-2026-50566)

nvd.nist.gov (CVE-2026-50566)

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