Description
Flux is an open and extensible continuous delivery solution for Kubernetes. Path Traversal in the kustomize-controller via a malicious `kustomization.yaml` allows an attacker to expose sensitive data from the controller’s pod filesystem and possibly privilege escalation in multi-tenancy deployments. Workarounds include automated tooling in the user's CI/CD pipeline to validate `kustomization.yaml` files conform with specific policies. This vulnerability is fixed in kustomize-controller v0.24.0 and included in flux2 v0.29.0.
Scores
CVSS v3
9.9
EPSS
0.0062
EPSS Percentile
70.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-22
CWE-36
Status
published
Products (4)
fluxcd/flux2
< 0.29.0
fluxcd/flux2
0 - 0.29.0Go
fluxcd/kustomize-controller
< 0.24.0
fluxcd/kustomize-controller
0 - 0.24.0Go
Published
May 06, 2022
Tracked Since
Feb 18, 2026