Helm's plugin verification fails open when .prov is missing, allowing unsigned plugin install
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 87% 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, Helm will install plugins missing provenance (.prov file) when signature verification is required. This vulnerability is fixed in 4.1.4.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
helm · helmReferences
https://access.redhat.com/errata/RHSA-2026:26441https://access.redhat.com/security/cve/CVE-2026-35205https://bugzilla.redhat.com/show_bug.cgi?id=2456927https://github.com/helm/helm/commit/05fa37973dc9e42b76e1d2883494c87174b6074fhttps://github.com/helm/helm/releases/tag/v4.1.4https://github.com/helm/helm/security/advisories/GHSA-q5jf-9vfq-h4h7https://helm.sh/docs/topics/provenance/#the-provenance-filehttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35205.json