CVE-2026-35206CWE-22

Helm Chart extraction output directory collapse via `Chart.yaml` name dot-segment

Medium · published April 9, 2026

CVSS v4.0
4.8
EPSS
0%
Percentile
9.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
4.8 · MEDIUM
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
EPSS
0.00199 · 9.2th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-04-09T21:02Z
EPSS history
Timeline
  • 09 APR 21:02Z
    Helm Chart extraction output directory collapse via `Chart.yaml` name dot-segment
    cvelistv5