CVE-2026-67349

highCVSS 7.5covered by 1 sourcefirst seen 2026-07-30

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 unset, allowing unauthenticated attackers to modify GCP service account keys via POST /serviceKey to redirect billing calls.

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Exploitation outlook

Low exploitation risk0.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all EPSS-scored CVEs.

Advisory coverage (1)

highCVE-2026-67349: OpenCost before 1.121.0 fails to authenticate the GET /helmValues endpoint, exposing base64-de…nvd · 2026-07-30

External references

NVD record for CVE-2026-67349

CVE.org record

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