PT-2026-48509 · Fission · Fission

Published 2026-06-10 · Updated 2026-06-10 · CVE-2026-50564

NVD

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, 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.

Fix

Improper Privilege Management

Improper Access Control

Protection Mechanism Failure

Weakness Enumeration

CWE-269

CWE-284

CWE-693

Related Identifiers

CVE-2026-50564

Affected Products

Fission

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-50564 · Security Note
• https://github.com/fission/fission/security/advisories/GHSA-gx55-f84r-v3r7 · Note
• https://github.com/fission/fission/releases/tag/v1.24.0 · Note
• https://github.com/fission/fission/pull/3391 · Note