Path Traversal in Helm
CVE-2026-35206
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.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.002 (10.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L.
Affected products
- Helm — versions >= 4.0.0, < 4.1.4, < 3.20.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-35206?
- CVE-2026-35206 is a medium-severity vulnerability in Helm, classified under Path Traversal. CVSS score: 4.4/10. Published 2026-04-09.
- How severe is CVE-2026-35206?
- Medium severity. CVSS v3 base score is 4.4 out of 10.