PT-2026-48511 · Fission · Fission

Published 2026-06-10 · Updated 2026-06-10 · CVE-2026-50566

Mitre

CVSS v3.1

9.9

Critical

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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.

Exploit

Fix

Improper Privilege Management

Weakness Enumeration

CWE-269

CWE-250

Related Identifiers

CVE-2026-50566

Affected Products

Fission

References · 4

• 🔥 https://github.com/fission/fission/security/advisories/GHSA-m63v-2g9w-2w6v · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-50566 · Security Note
• https://github.com/fission/fission/releases/tag/v1.24.0 · Note
• https://github.com/fission/fission/pull/3406 · Note