Helm has a path traversal in plugin metadata version enables arbitrary file write outside Helm plugin directory
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.4epss 0.2%
exploitation probability
0.2%top 90% of all CVEs
observed exploitation
nono source reports it
Helm is a package manager for Charts for Kubernetes. From 4.0.0 to 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. To prevent this, validate that the plugin.yaml of the Helm plugin does not include a version: field containing POSIX dot-dot path separators ie. "/../". This vulnerability is fixed in 4.1.4.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:L/SC:H/SI:H/SA:H
Affected products
helm · helmReferences
https://access.redhat.com/errata/RHSA-2026:26441https://access.redhat.com/security/cve/CVE-2026-35204https://bugzilla.redhat.com/show_bug.cgi?id=2456933https://github.com/helm/helm/commit/36c8539e99bc42d7aef9b87d136254662d04f027https://github.com/helm/helm/releases/tag/v4.1.4https://github.com/helm/helm/security/advisories/GHSA-vmx8-mqv2-9gmghttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35204.json