{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-44300", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-05T17:39:31.113Z", "datePublished": "2026-09-15T17:08:15.845Z", "dateUpdated": "2026-09-15T19:45:01.536Z"}, "containers": {"cna": {"title": "OpenCost ServiceKey Endpoint Unauthorized Credential Overwrite/Injection", "problemTypes": [{"descriptions": [{"cweId": "CWE-20", "lang": "en", "description": "CWE-20: Improper Input Validation", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-309", "lang": "en", "description": "CWE-309: Use of Password System for Primary Authentication", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.8, "baseSeverity": "HIGH", "vectorString": "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", "version": "4.0"}}], "references": [{"name": "https://github.com/opencost/opencost/security/advisories/GHSA-wmj8-9953-vff5", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/opencost/opencost/security/advisories/GHSA-wmj8-9953-vff5"}, {"name": "https://github.com/opencost/opencost/pull/3651", "tags": ["x_refsource_MISC"], "url": "https://github.com/opencost/opencost/pull/3651"}, {"name": "https://github.com/opencost/opencost/pull/3910", "tags": ["x_refsource_MISC"], "url": "https://github.com/opencost/opencost/pull/3910"}, {"name": "https://github.com/opencost/opencost/commit/69430e7f627b3e62c8999312c06949267fab813a", "tags": ["x_refsource_MISC"], "url": "https://github.com/opencost/opencost/commit/69430e7f627b3e62c8999312c06949267fab813a"}, {"name": "https://github.com/opencost/opencost/commit/a49a25bc2e0d6e220a131a4dc58f38ebe6ae851b", "tags": ["x_refsource_MISC"], "url": "https://github.com/opencost/opencost/commit/a49a25bc2e0d6e220a131a4dc58f38ebe6ae851b"}, {"name": "https://github.com/opencost/opencost/releases/tag/v1.120.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/opencost/opencost/releases/tag/v1.120.0"}, {"name": "https://github.com/opencost/opencost/releases/tag/v1.121.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/opencost/opencost/releases/tag/v1.121.0"}], "affected": [{"vendor": "opencost", "product": "opencost", "versions": [{"version": "< 1.121.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-15T17:08:15.845Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-wmj8-9953-vff5", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-15T19:16:35.644735Z", "id": "CVE-2026-44300", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-15T19:45:01.536Z"}}]}}

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{}

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