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TI-2026-47645 Aliases CVE-2026-67349GHSA-fq2p-hx59-r7g8

OpenCost < 1.121.0 Unauthenticated Helm Values Exposure and Admin Bypass

Priority HIGH 77CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.

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

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00497 42nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed opencost (opencost): 1.121.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
opencostopencostbefore 1.121.01.121.0Patch availableCNA
  • opencost Vendoropencost Affected before 1.121.0 Fixed in 1.121.0 Patch available CNA

Remediation

  • Fix · CNA opencost (opencost) Fixed in 1.121.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-67349
  2. 2026-10-03 Alias added: GHSA-fq2p-hx59-r7g8

References

Exploit 1

Patch 2

Other 1

  • TI-2026-32269 OpenCost ServiceKey Endpoint Unauthorized Credential Overwrite/Injection CVSS 4.0HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences