{"schema_version":"1.9.0","id":"GHSA-jm56-5h66-w453","published":"2021-05-24T16:57:06Z","modified":"2026-07-08T06:27:39.471417012Z","aliases":["BIT-helm-2020-15185","CVE-2020-15185"],"summary":"Repository index file allows for duplicates of the same chart entry in helm","details":"### Impact\n\nDuring a security audit of Helm's code base, security researchers at Trail of Bits identified a bug in which the a Helm repository can contain duplicates of the same chart, with the last one always used. If a repository is compromised, this lowers the level of access that an attacker needs to inject a bad chart into a repository.\n\nTo perform this attack, an attacker must have write access to the index file (which can occur during a MITM attack on a non-SSL connection).\n\n### Specific Go Packages Affected\nhelm.sh/helm/v3/pkg/repo\n\n### Patches\n\nThis issue has been patched in Helm 3.3.2 and 2.16.11\n\n### Workarounds\n\n- do not install charts from repositories you do not trust\n- fetch charts using a secure channel of communication (such as TLS)\n- use `helm pull` to fetch the chart, then review the chart’s content (either manually, or with `helm verify` if it has been signed) to ensure it has not been tampered with\n- manually review the index file in the Helm repository cache before installing software.","affected":[{"package":{"name":"helm.sh/helm/v3","ecosystem":"Go","purl":"pkg:golang/helm.sh/helm/v3"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.0"},{"fixed":"3.3.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/05/GHSA-jm56-5h66-w453/GHSA-jm56-5h66-w453.json"}},{"package":{"name":"helm.sh/helm","ecosystem":"Go","purl":"pkg:golang/helm.sh/helm"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.16.11"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/05/GHSA-jm56-5h66-w453/GHSA-jm56-5h66-w453.json"}}],"references":[{"type":"WEB","url":"https://github.com/helm/helm/security/advisories/GHSA-jm56-5h66-w453"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15185"},{"type":"WEB","url":"https://github.com/helm/helm/commit/055dd41cbe53ce131ab0357524a7f6729e6e40dc"},{"type":"WEB","url":"https://github.com/helm/helm/commit/6aab63765f99050b115f0aec3d6350c85e8da946"}],"database_specific":{"cwe_ids":["CWE-20","CWE-694","CWE-74"],"github_reviewed":true,"github_reviewed_at":"2021-05-24T16:47:58Z","nvd_published_at":"2020-09-17T22:15:00Z","severity":"LOW"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N"}]}