CVE-2026-67349highCWE-306

CVE-2026-67349: high-severity vulnerability in opencost

OpenCost < 1.121.0 Unauthenticated Helm Values Exposure and Admin Bypass

Published · Updated

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41Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 8.7epss 0.5%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
opencost · opencost
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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