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CVE-2026-67349

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a8e04122fcdcf83099fd1d51cd3ab0e81108901042d82fafd14be97cce1d2053
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3613128fb3931727513217d71784d6b993aa142e2ec2264741fbe27c4a0589dc · sha256:1b0561d620aa7b77… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3613128fb3931727513217d71784d6b993aa142e2ec2264741fbe27c4a0589dc · sha256:1b0561d620aa7b77… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","packageURL":"pkg:golang/github.com/opencost/opencost","product":"opencost","repo":"https://github.com/opencost/opencost","vendor":"opencost","versions":[{"lessThan":"1.121.0","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3613128fb3931727513217d71784d6b993aa142e2ec2264741fbe27c4a0589dc · sha256:1b0561d620aa7b77… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3613128fb3931727513217d71784d6b993aa142e2ec2264741fbe27c4a0589dc · sha256:1b0561d620aa7b77… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3613128fb3931727513217d71784d6b993aa142e2ec2264741fbe27c4a0589dc · sha256:1b0561d620aa7b77… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-306","description":"Missing Authentication for Critical Function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3613128fb3931727513217d71784d6b993aa142e2ec2264741fbe27c4a0589dc · sha256:1b0561d620aa7b77… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"name":"Patch Commit","tags":["patch"],"url":"https://github.com/opencost/opencost/commit/a49a25bc2e0d6e220a131a4dc58f38ebe6ae851b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3613128fb3931727513217d71784d6b993aa142e2ec2264741fbe27c4a0589dc · sha256:1b0561d620aa7b77… · /containers/cna/references/3
{"name":"Researcher Disclosure","tags":["technical-description","exploit","issue-tracking"],"url":"https://github.com/opencost/opencost/issues/3893"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3613128fb3931727513217d71784d6b993aa142e2ec2264741fbe27c4a0589dc · sha256:1b0561d620aa7b77… · /containers/cna/references/0
{"name":"Pull Request","tags":["issue-tracking","patch"],"url":"https://github.com/opencost/opencost/pull/3910"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3613128fb3931727513217d71784d6b993aa142e2ec2264741fbe27c4a0589dc · sha256:1b0561d620aa7b77… · /containers/cna/references/2
{"name":"OpenCost core/v1.121.0 Release Notes","tags":["release-notes"],"url":"https://github.com/opencost/opencost/releases/tag/core/v1.121.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3613128fb3931727513217d71784d6b993aa142e2ec2264741fbe27c4a0589dc · sha256:1b0561d620aa7b77… · /containers/cna/references/1
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/opencost-unauthenticated-helm-values-exposure-and-admin-bypass"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3613128fb3931727513217d71784d6b993aa142e2ec2264741fbe27c4a0589dc · sha256:1b0561d620aa7b77… · /containers/cna/references/4

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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