CVE-2026-35204High· 8.6▾ MidnightPoC availableHelm has a path traversal in plugin metadata version enables arbitrary file write outside Helm plugin directory
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 47.3 · likelihood 0 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Exploit-prediction probability, daily snapshots since Jul 25.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
0.2%
1 GitHub repo
Helm is a package manager for Charts for Kubernetes. In Helm versions >=4.0.0 and <=4.1.3, a specially crafted Helm plugin, when installed or updated, will cause Helm to write the contents of the plugin to an arbitrary filesystem location.
A Helm user who installs or updates a plugin that is specially crafted can cause Helm to attempt to write the content of the affected plugin to an arbitrary location on the user's filesystem. Impacted users risk potentially overwriting user and system files which may further compromise the integrity of a system.
This issue has been patched in Helm v4.1.4
Installing/updating a plugin with a non-SemVer version (which excludes path traversal patterns) will result in an error.
Validate that the plugin.yaml of the Helm plugin does not include a version: field containing POSIX dot-dot path separators ie. "/../".
helm.sh/helm/v4 >= 4.0.0, < 4.1.4Upgrade to a patched release:
helm.sh/helm/v4 4.1.4Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-35205High· 7.8Helm's plugin verification fails open when .prov is missing, allowing unsigned plugin install
CVE-2026-35206MediumHelm Chart extraction output directory collapse via `Chart.yaml` name dot-segment
CVE-2022-36055Medium· 6.5Helm Vulnerable to denial of service through string value parsing
CVE-2025-32387Medium· 6.5Helm Allows A Specially Crafted JSON Schema To Cause A Stack Overflow
CVE-2025-32386Medium· 6.5Helm Allows A Specially Crafted Chart Archive To Cause Out Of Memory Termination
CVE-2020-15186Low· 3.4Improper Sanitizing of plugin names in helm