CVE-2026-67349Public exploitNetwork attack vector

Credential disclosure and admin bypass via missing authentication

Published Jul 30, 2026 · Updated Jul 30, 2026

Missing authentication in OpenCost before 1.121.0 allows remote attackers to read Helm values and modify cloud billing configuration. The /helmValues route invokes GetHelmValues without adminAuthMiddleware, while that middleware invokes the next handler when ADMIN_TOKEN is unset. Network access is sufficient to obtain decoded HELM_VALUES data; default deployments also expose GCP service-key and cloud-configuration changes.

CVSS severity8.7
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in OpenCost before 1.121.0 allows remote attackers to read Helm values and modify cloud billing configuration. The /helmValues route invokes GetHelmValues without adminAuthMiddleware, while that middleware invokes the next handler when ADMIN_TOKEN is unset. Network access is sufficient to obtain decoded HELM_VALUES data; default deployments also expose GCP service-key and cloud-configuration changes.

The record

CVE
CVE-2026-67349
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
OpenCost
Product
OpenCost
Classifications
CWE-306, T1552, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.121.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenCost · OpenCostversion=0 <1.121.0

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1552Unsecured Credentials
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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