medium4.4
CVE-2026-35206
Helm Chart extraction output directory collapse via `Chart.yaml` name dot-segment
Impact
Helm is a package manager for Charts for Kubernetes. In Helm versions <=3.20.1 and <=4.1.3, a specially crafted Chart will cause helm pull --untar [chart URL | repo/chartname] to write the Chart's contents to the immediate output directory (as defaulted to the current working directory; or as given by the --destination and --untardir flags), rather than the expected output directory suffixed by the chart's name. This vulnerability is fixed in 3.20.2 and 4.1.4.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | helm.sh/helm/v4 | <= 4.1.3 | 4.1.4 |
| go | helm.sh/helm/v3 | <= 3.20.1 | 3.20.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Helm | Helm | before 3.20.2 from 4.0.0 before 4.1.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-hr2v-4r36-88hr
- https://github.com/helm/helm/security/advisories/GHSA-hr2v-4r36-88hr
- https://nvd.nist.gov/vuln/detail/CVE-2026-35206
- https://github.com/helm/helm/commit/4e7994d4467182f535b6797c94b5b0e994a91436
- https://github.com/helm/helm/releases/tag/v4.1.4