CVE-2026-50563CWE-269CWE-284

Fission Container Executor Function PodSpec Injection Leading to Node Escape

Critical · published June 10, 2026

CVSS v3.1
9.9
EPSS
1%
Percentile
42.3
In the wild
Unconfirmed
What it is

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 Container Executor path lets a tenant supply Function.spec.podspec directly; the executor merges it into the executor-built podspec and creates a Deployment whose pods run the user's container image. This issue has been patched in version 1.24.0.

The record
Technical detail
CVSS v3.1
9.9 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00506 · 42.3th percentile
Weaknesses
CWE-269 · Improper Privilege Management; CWE-284 · Improper Access Control
Published
2026-06-10T17:27Z
EPSS history
Timeline
  • 10 JUN 17:27Z
    Fission Container Executor Function PodSpec Injection Leading to Node Escape
    cvelistv5