CVE-2026-44300

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Source
https://cve.org/CVERecord?id=CVE-2026-44300
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44300.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-44300
Aliases
Downstream
Related
Published
2026-09-15T17:08:15Z
Modified
2026-09-17T03:45:57Z
Severity
  • 8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
OpenCost ServiceKey Endpoint Unauthorized Credential Overwrite/Injection
Details

OpenCost provides cost monitoring for Kubernetes workloads and cloud costs. Prior to 1.121.0, the POST /serviceKey endpoint in pkg/costmodel/router.go allows a network client to invoke AddServiceKey without mandatory authentication and submit an arbitrary key form value that is written to the GCP service-account key.json file returned by GetGCPAuthSecretFilePath in core/pkg/env/core.go. The attacker controls the file contents but not the CONFIG_PATH-derived directory, the key.json filename, or the file mode. Replacing the credential contents can disrupt GCP cost collection or cause OpenCost to use attacker-selected credentials, and the wildcard Access-Control-Allow-Origin response permits browser-assisted requests when the service is reachable from a browser. This issue is fixed in version 1.121.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-20",
        "CWE-309"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44300.json"
}
References

Affected packages

Git / github.com/opencost/opencost

Affected ranges

Type
GIT
Repo
https://github.com/opencost/opencost
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
69430e7f627b3e62c8999312c06949267fab813a
Fixed
a49a25bc2e0d6e220a131a4dc58f38ebe6ae851b
Fixed
22da667c047765788a5cb8b01c1e8ad4cb87fc0a
Fixed
f5fc438c9a237847964aa561b5a593aa622f91df
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.121.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

core/v1.*
core/v1.117.0
core/v1.117.2
core/v1.117.3
core/v1.117.5
core/v1.117.6
core/v1.118.0
core/v1.118.1
core/v1.119.0
core/v1.119.1
core/v1.119.2
core/v1.120.0
core/v1.120.1
core/v1.120.2
core/v1.120.3
core/v1.120.4
kc-2.*
kc-2.5.4
kc-2.5.4-rc.3
kc-2.5.4-rc.4
kc-2.5.5
kc-2.5.5-rc.0
kc-2.5.5-rc.1
kc-2.5.5-rc.2
kc-2.6.0
kc-2.6.0-rc.1
kc-2.6.0-rc.2
kc-2.6.0-rc.3
kc-2.6.0-rc.4
kc-2.6.0-rc.5
kc-2.6.0-rc.6
kc-2.6.0-rc.7
kc-2.6.1
kc-2.6.1-rc.0
kc-2.6.1-rc.1
kc-2.6.1-rc.2
kc-2.6.2
kc-2.6.2-rc.0
kc-2.6.2-rc.1
kc-2.6.3
kc-2.6.3-rc.2
kc-2.6.4
kc-2.6.4-rc.0
kc-2.6.5
kc-2.6.5-rc.0
kc-2.6.5-rc.1
kc-2.7.0
kc-2.7.0-rc.0
kc-2.7.0-rc.1
kc-2.7.0-rc.2
kc-2.8.0-rc.0
kc-2.9.7
kc-3.*
kc-3.0.0
kc-3.0.0-rc.0
kc-3.0.0-rc.1
kc-3.0.0-rc.2
kc-3.0.0-rc.5
kc-3.0.0-rc.6
kc-3.0.0-test.0
kc-3.0.3
kc-3.0.3-rc.0
kc-3.0.3-rc.1
kc-3.0.4-rc.0
kc-3.1.0
kc-3.1.0-rc.0
kc-3.2.0
kc-3.2.0-rc.0
kc-3.2.0-rc.1
kc-3.2.0-rc.2
kc-3.2.0-rc.3
kc-3.2.1
kc-3.2.1-rc.2
kc-3.2.1-rc.4
modules/collector-source/v1.*
modules/collector-source/v1.117.0
modules/collector-source/v1.117.2
modules/collector-source/v1.117.3
modules/collector-source/v1.117.5
modules/collector-source/v1.117.6
modules/collector-source/v1.118.0
modules/collector-source/v1.118.1
modules/collector-source/v1.119.0
modules/collector-source/v1.119.1
modules/collector-source/v1.119.2
modules/collector-source/v1.120.0
modules/collector-source/v1.120.1
modules/collector-source/v1.120.2
modules/collector-source/v1.120.3
modules/collector-source/v1.120.4
modules/prometheus-source/v1.*
modules/prometheus-source/v1.117.0
modules/prometheus-source/v1.117.2
modules/prometheus-source/v1.117.3
modules/prometheus-source/v1.117.5
modules/prometheus-source/v1.117.6
modules/prometheus-source/v1.118.0
modules/prometheus-source/v1.118.1
modules/prometheus-source/v1.119.0
modules/prometheus-source/v1.119.1
modules/prometheus-source/v1.119.2
modules/prometheus-source/v1.120.0
modules/prometheus-source/v1.120.1
modules/prometheus-source/v1.120.2
modules/prometheus-source/v1.120.3
modules/prometheus-source/v1.120.4
v0.*
v0.0.0000000001-rc.0
v0.0.0000000001-test.0
v0.0.000000001-rc.0
v0.0.0000001-depotdev.01
v0.0.1-actdev.1
v0.0.1-actdev.2
v0.0.1-depotdev.01
v0.0.1-depotprodtestrun.1
v0.000000001.0-rc.0
v1.*
v1.102.0-rc.0
v1.103.0-rc.0
v1.103.0-rc.1
v1.104.0-rc.0
v1.105.0-rc.0
v1.106.0-rc.0
v1.106.0-rc.1
v1.107.0-rc.0
v1.109
v1.110
v1.111.0
v1.112.0
v1.113.0
v1.114.0
v1.116
v1.116.0
v1.117
v1.117.0
v1.117.2
v1.117.3
v1.117.4
v1.117.5
v1.117.6
v1.118
v1.118.0
v1.118.1
v1.119
v1.119.0
v1.119.1
v1.119.2
v1.120
v1.120.0
v1.120.1
v1.120.2
v1.120.3
v1.120.4
v1.45.3
v1.91.0-rc.0
v2.*
v2.0.0-rc.0
v2.0.0-rc.1
v2.1.0-rc.0
v2.1.0-rc.1
v2.1.0-rc.2
v2.1.0-rc.3
v2.1.0-rc.4
v2.1.0-rc.5
v2.2.0-rc.0
v2.2.0-rc.1
v2.2.0-rc.2
v2.3.0-rc.0
v2.4.0-rc.0
v2.5.0-rc.0
v2.5.0-rc.1
v2.6.0-rc.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44300.json"