Improper path handling in Kustomization files allows for denial of service

published 2022-05-06 4 y ago modified 2026-09-10 59 d ago also BIT-flux-2022-24878 , BIT-kustomize-2022-24878 , EUVD-2022-3043 , GHSA-7pwf-jg34-hxwp , GO-2022-0448

cvss: 7.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits: 0; none known

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 cause a Denial of Service at the controller level. 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. Users are recommended to upgrade.

Patch / fix

fixed in 6

go github.com/fluxcd/kustomize-controller 0.24.0
go github.com/fluxcd/flux2 0.29.0
bitnami flux 0.29.0
bitnami kustomize 0.24.0
fluxcd flux2 0.29.0
fluxcd kustomize-controller 0.24.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 18 mo ago (2025-04-23)

Exploit prediction

1.02% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
GitHub	3.1	7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:N/I:N/A:P
OSV	3.1	7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
go	github.com/fluxcd/kustomize-controller	>=0.16.0, <0.24.0	0.24.0
go	github.com/fluxcd/flux2	>=0.19.0, <0.29.0	0.29.0
bitnami	flux	<0.29.0	0.29.0
bitnami	kustomize	<0.24.0	0.24.0

Affected products

fluxcd flux2

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory
CWE-674 Uncontrolled Recursion

References

github.com /fluxcd/flux2/security/advisories/GHSA-7pwf-jg34-hxwp
web, third-party-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2022-24878
advisory, web
github.com /fluxcd/flux2
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary