Vulnerabilities in pkg:golang/helm.sh/helm/v3

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-hr2v-4r36-88hr",
  "modified" : "2026-04-10T15:33:09Z",
  "published" : "2026-04-10T15:33:09Z",
  "aliases" : [ "CVE-2026-35206" ],
  "summary" : "Helm Chart extraction output directory collapse via `Chart.yaml` name dot-segment",
  "details" : "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.\n\n### Impact\n\nThe bug enables writing the Chart's contents (unpackaged/untar'ed) to the output directory `<output dir>/`, instead of the expected `<output dir>/<chart name>/`, potentially overwriting the contents of the targeted directory.\n\nNote: a chart name containing POSIX dot-dot, or dot-dot and slashes (as if to refer to parent directories) do not resolve beyond the output directory as designed.\n\n### Patches\n\nThis issue has been resolved in Helm v3.20.2 and v4.1.3\n\nA Chart with an unexpected name (those specified to be \".\" or \"..\"), or a Chart name which results in a non-unique directory will be rejected.\n\n### Workarounds\n\nEnsure the the name of the Chart does not comprise/contain POSIX pathname special directory references ie. dot-dot (\"..\") or dot (\".\"). In addition, ensuring that the `pull --untar` flag (or equivalent SDK option) refers to a unique/empty output directory prevents chart extraction from inadvertently overwriting existing files within the specified directory.\n\n### Credits\n\nOleh Konko\n@1seal",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "helm.sh/helm/v4"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.1.4"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 4.1.3"
    }
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "helm.sh/helm/v3"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.20.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 3.20.1"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/helm/helm/security/advisories/GHSA-hr2v-4r36-88hr"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-35206"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/helm/helm/commit/4e7994d4467182f535b6797c94b5b0e994a91436"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/helm/helm"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/helm/helm/releases/tag/v4.1.4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-10T15:33:09Z",
    "nvd_published_at" : "2026-04-09T21:16:09Z"
  }
}