{"id":"CVE-2026-67349","title":"OpenCost before 1.121.0 fails to authenticate the GET /helmValues endpoint, exposing base64-decoded HELM_VALUES environment variable containing cloud provider credentials","summary":"OpenCost before 1.121.0 fails to authenticate the GET /helmValues endpoint, exposing base64-decoded HELM_VALUES environment variable containing cloud provider credentials. Additionally, adminAuthMiddleware fails open when ADMIN_TOKEN is …","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-306"],"published":"2026-07-30","updated":"2026-07-31","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-67349","references":[{"url":"https://github.com/opencost/opencost/commit/a49a25bc2e0d6e220a131a4dc58f38ebe6ae851b","label":"disclosure@vulncheck.com"},{"url":"https://github.com/opencost/opencost/issues/3893","label":"disclosure@vulncheck.com"},{"url":"https://github.com/opencost/opencost/pull/3910","label":"disclosure@vulncheck.com"},{"url":"https://github.com/opencost/opencost/releases/tag/core/v1.121.0","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/opencost-unauthenticated-helm-values-exposure-and-admin-bypass","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00286,"epssPercentile":0.21342,"ingestedAt":"2026-08-01T22:15:46.086Z","slug":"CVE-2026-67349","body":"## Overview\n\nOpenCost before 1.121.0 fails to authenticate the GET /helmValues endpoint, exposing base64-decoded HELM_VALUES environment variable containing cloud provider credentials. Additionally, adminAuthMiddleware fails open when ADMIN_TOKEN is unset, allowing unauthenticated attackers to modify GCP service account keys via POST /serviceKey to redirect billing calls.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}