{"id":"CVE-2020-15185","aliases":["GHSA-jm56-5h66-w453","BIT-helm-2020-15185"],"title":"Repository index file allows for duplicates of the same chart entry in helm","summary":"Repository index file allows for duplicates of the same chart entry in helm","severity":"low","cvss":2.2,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N","vendor":"helm","product":"helm.sh/helm/v3","ecosystem":"go","affected":["helm.sh/helm/v3 >= 3.0.0, < 3.3.2","helm.sh/helm < 2.16.11"],"patched":["helm.sh/helm/v3 3.3.2","helm.sh/helm 2.16.11"],"published":"2021-05-24","updated":"2026-07-08","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-jm56-5h66-w453","references":[{"url":"https://github.com/helm/helm/security/advisories/GHSA-jm56-5h66-w453"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15185"},{"url":"https://github.com/helm/helm/commit/055dd41cbe53ce131ab0357524a7f6729e6e40dc"},{"url":"https://github.com/helm/helm/commit/6aab63765f99050b115f0aec3d6350c85e8da946"}],"tags":["osv","go"],"epss":0.00883,"epssPercentile":0.57657,"ingestedAt":"2026-07-09T18:56:36.588Z","slug":"CVE-2020-15185","body":"## Overview\n\n### 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.\n\n## Affected packages\n\n- `helm.sh/helm/v3 >= 3.0.0, < 3.3.2`\n- `helm.sh/helm < 2.16.11`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `helm.sh/helm/v3 3.3.2`\n- `helm.sh/helm 2.16.11`","depth":"sunlit","depthScore":12,"depthScoreParts":{"impact":12.1,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}