{"id":"CVE-2025-55198","aliases":["BIT-helm-2025-55198","GHSA-f9f8-9pmf-xv68","GO-2025-3888"],"url":"https://o3.security/vulnerability/CVE-2025-55198","summary":"Helm May Panic Due To Incorrect YAML Content","details":"A Helm contributor discovered an improper validation of type error when parsing Chart.yaml and index.yaml files that can lead to a panic.\n\n### Impact\n\nThere are two areas of YAML validation that were impacted. First, when a `Chart.yaml` file had a `null` maintainer or the `child` or `parent` of a dependencies `import-values` could be parsed as something other than a string, `helm lint` would panic. Second, when an `index.yaml` had an empty entry in the list of chart versions Helm would panic on interactions with that repository.\n\n### Patches\n\nThis issue has been resolved in Helm v3.18.5.\n\n### Workarounds\n\nEnsure YAML files are formatted as Helm expects prior to processing them with Helm.\n\n### References\n\nHelm's security policy is spelled out in detail in our [SECURITY](https://github.com/helm/community/blob/master/SECURITY.md) document.\n\n### Credits\n\nDisclosed by Jakub Ciolek at AlphaSense.","published":"2025-08-13T23:23:56.780Z","modified":"2026-08-12T03:51:09.354167917Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"epss":{"score":0.00334,"percentile":0.26633,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"helm.sh/helm/v3","fixedVersion":"3.18.5"}],"fix":{"url":"https://github.com/helm/helm/commit/ec5f59e2db56533d042a124f5bae54dd87b558e6","label":"helm/helm@ec5f59e"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/55xxx/CVE-2025-55198.json"},{"type":"ADVISORY","url":"https://github.com/helm/helm/security/advisories/GHSA-f9f8-9pmf-xv68"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55198"},{"type":"FIX","url":"https://github.com/helm/helm/commit/ec5f59e2db56533d042a124f5bae54dd87b558e6"},{"type":"PACKAGE","url":"https://github.com/helm/helm"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:09.354167917Z"}}